G.SRT.C.6: Explain and use the relationship between the sine and cosine of complementary angles.

Explain and use the relationship between the sine and cosine of complementary angles.

Example Problems
Find the following trigonometric value:

Express your answer exactly.
Find the following trigonometric value:

Express your answer exactly.
Find the following trigonometric value:

Express your answer exactly.
Khan Academy Resources
Use ratios in right trianglesRelate ratios in right trianglesSine & cosine of complementary anglesUsing complementary anglesTrig word problem: complementary angles
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