Triangle in Quadrant I

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Illustration of an angle &alpha with the terminal side used to draw a triangle in quadrant I.

Keywords

tangent, angle, triangles, Sine, Tan, acute, trigonometry, sin, cos, cosine, trigonometric, trig functions, reference, quadrant 1

Galleries

Trigonometry: Triangles

Source

George N. Bauer, PH.D. and W.E. Brooke, C.E., M.A. Plane And Spherical Trigonometry (Boston: D.C. Heath & Co., 1917) 113

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