Roof with a slope of 30 degrees. Angle theta is the inclination to the horizontal of the line AB, drawn in the roof and making an angle of 35 degrees with the line of greatest slope.

Roof With 30 degree Inclination for Trigonometry Triangle Problems

Roof with a slope of 30 degrees. Angle theta is the inclination to the horizontal of the line AB, drawn…

Two set squares, whose sides are 3,4, and 5 in., are placed so that their 4-in. sides and right angles coincide, and the angle between the 3-in. sides is 50 degrees. Theta, Ǝ is the angle between the longest sides.

Two Squares With Sides of Lengths 3,4,5 Placed at Right Angles to Each Other

Two set squares, whose sides are 3,4, and 5 in., are placed so that their 4-in. sides and right angles…

Circle modeling the earth. O is the center of the earth, r the radius of the earth, and h the height of the point P above the surface; it is required to find the distance from the point P to the horizon at A.

Circle With Center o and Radius r with point P

Circle modeling the earth. O is the center of the earth, r the radius of the earth, and h the height…

Illustration of blueprint used by highway engineers to widen the pavement on the inside of the curve of a road.

Curve in Pavement of Road

Illustration of blueprint used by highway engineers to widen the pavement on the inside of the curve…

Coordinate axis with angle XOP equal to theta, Θ, and angle XOQ=180 - Θ. From any point in the terminal side of XOP, as B, a perpendicular can be drawn, AB, to the x-axis; and from D, any point in the terminal side o f XOQ, perpendicular CD can be drawn to the x-axis. The right triangles OAB and OCD are similar. Also, OA, AB, OB, CD, and OD are positive, while OC is negative.

Coordinate Axis With Angles, Lines, and Perpendiculars Drawn

Coordinate axis with angle XOP equal to theta, Θ, and angle XOQ=180 - Θ. From any point in the terminal…

Angle XOP=Θ and angle XOQ=90+Θ. From a point in the terminal side of each a perpendicular line is drawn to the x-axis. The right triangles AOB and OCD thus formed are similar, and have all their sides positive except OC

Coordinate Axis With Perpendiculars Drawn To Form Similar Right Triangles

Angle XOP=Θ and angle XOQ=90+Θ. From a point in the terminal side of each a perpendicular line is…

Angle XOP=Θ and angle XOQ=- Θ. From a point in the terminal side of each a perpendicular line is drawn to the x-axis. The right triangles OAB and OAC thus formed are similar, and have all their sides positive except AC, which is negative.

Coordinate Axis With Perpendiculars Drawn To Form Similar Right Triangles From Positive and Negative Theta, Θ

Angle XOP=Θ and angle XOQ=- Θ. From a point in the terminal side of each a perpendicular line is drawn…

Right triangle OCB that can be used to show the relationships between x, y, r, and Θ.

Right Triangle OCB With, x, y, and r shown

Right triangle OCB that can be used to show the relationships between x, y, r, and Θ.

Angles used to illustrate the sum and difference of two angles and trig identities.

Angles Used to Illustrate Sum and Difference of Two Angles

Angles used to illustrate the sum and difference of two angles and trig identities.

Illustration of the resultant vector when two vectors are acting upon a body at point P at 90 degrees.

Resultant Vector With Vectors at 90 degrees

Illustration of the resultant vector when two vectors are acting upon a body at point P at 90 degrees.

Illustration of the resultant vector when two vectors are acting upon a body at point P at Ǝ degrees.

Resultant Vector With Vectors at Angle Ǝ

Illustration of the resultant vector when two vectors are acting upon a body at point P at Ǝ degrees.

An isosceles triangle with angles 1, 89.5, 89.5

Isosceles Triangle degrees 1, 89.5, 89.5

An isosceles triangle with angles 1, 89.5, 89.5

An isosceles triangle with angles 2, 89, 89

Isosceles Triangle degrees 2, 89, 89

An isosceles triangle with angles 2, 89, 89

An isosceles triangle with angles 3, 88.5, 88.5

Isosceles Triangle degrees 3, 88.5, 88.5

An isosceles triangle with angles 3, 88.5, 88.5

An isosceles triangle with angles 4, 88, 88

Isosceles Triangle degrees 4, 88, 88

An isosceles triangle with angles 4, 88, 88

An isosceles triangle with angles 5, 87.5, 87.5

Isosceles Triangle degrees 5, 87.5, 87.5

An isosceles triangle with angles 5, 87.5, 87.5

An isosceles triangle with angles 6, 87, 87

Isosceles Triangle degrees 6, 87, 87

An isosceles triangle with angles 6, 87, 87

An isosceles triangle with angles 7, 86.5, 86.5

Isosceles Triangle degrees 7, 86.5, 86.5

An isosceles triangle with angles 7, 86.5, 86.5

An isosceles triangle with angles 8, 86, 86

Isosceles Triangle degrees 8, 86, 86

An isosceles triangle with angles 8, 86, 86

An isosceles triangle with angles 9, 85.5, 85.5

Isosceles Triangle degrees 9, 85.5, 85.5

An isosceles triangle with angles 9, 85.5, 85.5

An isosceles triangle with angles 10, 85, 85

Isosceles Triangle degrees 10, 85, 85

An isosceles triangle with angles 10, 85, 85

An isosceles triangle with angles 11, 84.5, 84.5

Isosceles Triangle degrees 11, 84.5, 84.5

An isosceles triangle with angles 11, 84.5, 84.5

An isosceles triangle with angles 12, 84, 84

Isosceles Triangle degrees 12, 84, 84

An isosceles triangle with angles 12, 84, 84

An isosceles triangle with angles 13, 83.5, 83.5

Isosceles Triangle degrees 13, 83.5, 83.5

An isosceles triangle with angles 13, 83.5, 83.5

An isosceles triangle with angles 14, 83, 83

Isosceles Triangle degrees 14, 83, 83

An isosceles triangle with angles 14, 83, 83

An isosceles triangle with angles 15, 82.5, 82.5

Isosceles Triangle degrees 15, 82.5, 82.5

An isosceles triangle with angles 15, 82.5, 82.5

An isosceles triangle with angles 16, 82, 82

Isosceles Triangle degrees 16, 82, 82

An isosceles triangle with angles 16, 82, 82

An isosceles triangle with angles 17, 81.5, 81.5

Isosceles Triangle degrees 17, 81.5, 81.5

An isosceles triangle with angles 17, 81.5, 81.5

An isosceles triangle with angles 18, 81, 81

Isosceles Triangle degrees 18, 81, 81

An isosceles triangle with angles 18, 81, 81

An isosceles triangle with angles 19, 80.5, 80.5

Isosceles Triangle degrees 19, 80.5, 80.5

An isosceles triangle with angles 19, 80.5, 80.5

An isosceles triangle with angles 20, 80, 80

Isosceles Triangle degrees 20, 80, 80

An isosceles triangle with angles 20, 80, 80

An isosceles triangle with angles 21, 79.5, 79.5

Isosceles Triangle degrees 21, 79.5, 79.5

An isosceles triangle with angles 21, 79.5, 79.5

An isosceles triangle with angles 22, 79, 79

Isosceles Triangle degrees 22, 79, 79

An isosceles triangle with angles 22, 79, 79

An isosceles triangle with angles 23, 78.5, 78.5

Isosceles Triangle degrees 23, 78.5, 78.5

An isosceles triangle with angles 23, 78.5, 78.5

An isosceles triangle with angles 24, 78, 78

Isosceles Triangle degrees 24, 78, 78

An isosceles triangle with angles 24, 78, 78

An isosceles triangle with angles 25, 77.5, 77.5

Isosceles Triangle degrees 25, 77.5, 77.5

An isosceles triangle with angles 25, 77.5, 77.5

An isosceles triangle with angles 26, 77, 77

Isosceles Triangle degrees 26, 77, 77

An isosceles triangle with angles 26, 77, 77

An isosceles triangle with angles 27, 76.5, 76.5

Isosceles Triangle degrees 27, 76.5, 76.5

An isosceles triangle with angles 27, 76.5, 76.5

An isosceles triangle with angles 28, 76, 76

Isosceles Triangle degrees 28, 76, 76

An isosceles triangle with angles 28, 76, 76

An isosceles triangle with angles 29, 75.5, 75.5

Isosceles Triangle degrees 29, 75.5, 75.5

An isosceles triangle with angles 29, 75.5, 75.5

An isosceles triangle with angles 30, 75, 75

Isosceles Triangle degrees 30, 75, 75

An isosceles triangle with angles 30, 75, 75

An isosceles triangle with angles 31, 74.5, 74.5

Isosceles Triangle degrees 31, 74.5, 74.5

An isosceles triangle with angles 31, 74.5, 74.5

An isosceles triangle with angles 32, 74, 74

Isosceles Triangle degrees 32, 74, 74

An isosceles triangle with angles 32, 74, 74

An isosceles triangle with angles 33, 73.5, 73.5

Isosceles Triangle degrees 33, 73.5, 73.5

An isosceles triangle with angles 33, 73.5, 73.5

An isosceles triangle with angles 34, 73, 73

Isosceles Triangle degrees 34, 73, 73

An isosceles triangle with angles 34, 73, 73

An isosceles triangle with angles 35, 72.5, 72.5

Isosceles Triangle degrees 35, 72.5, 72.5

An isosceles triangle with angles 35, 72.5, 72.5

An isosceles triangle with angles 36, 72, 72

Isosceles Triangle degrees 36, 72, 72

An isosceles triangle with angles 36, 72, 72

An isosceles triangle with angles 37, 71.5, 71.5

Isosceles Triangle degrees 37, 71.5, 71.5

An isosceles triangle with angles 37, 71.5, 71.5

An isosceles triangle with angles 38, 71, 71

Isosceles Triangle degrees 38, 71, 71

An isosceles triangle with angles 38, 71, 71

An isosceles triangle with angles 39, 70.5, 70.5

Isosceles Triangle degrees 39, 70.5, 70.5

An isosceles triangle with angles 39, 70.5, 70.5

An isosceles triangle with angles 40, 70, 70

Isosceles Triangle degrees 40, 70, 70

An isosceles triangle with angles 40, 70, 70

An isosceles triangle with angles 41, 69.5, 69.5

Isosceles Triangle degrees 41, 69.5, 69.5

An isosceles triangle with angles 41, 69.5, 69.5

An isosceles triangle with angles 42, 69, 69

Isosceles Triangle degrees 42, 69, 69

An isosceles triangle with angles 42, 69, 69

An isosceles triangle with angles 43, 68.5, 68.5

Isosceles Triangle degrees 43, 68.5, 68.5

An isosceles triangle with angles 43, 68.5, 68.5

An isosceles triangle with angles 44, 68, 68

Isosceles Triangle degrees 44, 68, 68

An isosceles triangle with angles 44, 68, 68

An isosceles triangle with angles 45, 67.5, 67.5

Isosceles Triangle degrees 45, 67.5, 67.5

An isosceles triangle with angles 45, 67.5, 67.5

An isosceles triangle with angles 46, 67, 67

Isosceles Triangle degrees 46, 67, 67

An isosceles triangle with angles 46, 67, 67

An isosceles triangle with angles 47, 66.5, 66.5

Isosceles Triangle degrees 47, 66.5, 66.5

An isosceles triangle with angles 47, 66.5, 66.5

An isosceles triangle with angles 48, 66, 66

Isosceles Triangle degrees 48, 66, 66

An isosceles triangle with angles 48, 66, 66

An isosceles triangle with angles 49, 65.5, 65.5

Isosceles Triangle degrees 49, 65.5, 65.5

An isosceles triangle with angles 49, 65.5, 65.5