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What is the relationship between the sine and cosine of complementary angles? Please give an example to support your answer.
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What is the relationship between the sine and cosine of complementary angles? Please give an example to support your answer.

User EddieB
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The sine of any acute angle is equal to the cosine of its complement. Meanwhile, the cosine of any acute angle is equal to the sine of its complement. Sine and cosines are called "cofunctions".
User Tobias Gassmann
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