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Back to Explain sine and cosine relationship — Problem 5 · Task Set 20

Exercises: Sine and Cosine of Complementary Angles

Grade 9·20 problems·~28 min·Common Core Math - HS Geometry·standard·hsg-srt-c-7
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Fluency Practice

1.

Simplify cos⁡(90°−x)\cos(90\degree - x). Your answer should be a single trig function of xx: cos⁡(90°−x)=‾\cos(90\degree - x) = \underline{\hspace{5em}}.

simplified expression: