Google Classroom

GeoGebra Classroom

Trigonometry

作者：godfreysown_1, Betty Voon Wan Niu

主題：餘弦, 正弦, 正切函數, 三角學

Drag point C to view the desire trigonometric graph. Point E is

, point F is

and point G is

. The hypotenus (radius of circle) of the triangle is always 1.

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