Sine, Cosine, and Complementary Angles

1,004 views · Published 24 May 2015 · 6:01 · Indexed 27 October 2026

Channel: MooMooMath and Science · 2015 · People & Blogs

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This video demonstrates why sin is equal to the cosine of it's complementary angle. Complementary angles are angles that add to 90 degrees.
In addition, the video shows why tangent is equal to the inverse of the tangent of it's complement. 

MooMooMath provides helpful Math  and Geometry videos

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