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aleksandr82 [10.1K]
3 years ago
7

Express as a function of a different angle 0 Cos(157)

Mathematics
2 answers:
kompoz [17]3 years ago
7 0

\bf \textit{Cofunction Identities} \\\\ sin\left(90^o-\theta\right)=cos(\theta) \qquad cos\left(90^o-\theta\right)=sin(\theta) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ cos(157)\implies cos(90^o+67^o)\implies cos[90^o-(-67^o)] \\\\\\ sin(-67^o)\implies -sin(67^o)


you can check the example in the picture below, why the cosine of the complementary angle is equals to the sine of its sibling.

marshall27 [118]3 years ago
5 0

the answer is -sin67

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