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Find the value of cos 40° + cos 80° + cos 160° ​please answer this question help!!!! everyone
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Find the value of cos 40° + cos 80° + cos 160°

​please answer this question help!!!! everyone

User Starthis
by
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1 Answer

5 votes

Answer:

0

Explanation:

Cos 40 = 0.7660

cos80=0.1736

cos160=-0.9396

0.7660+0.1736+-0.9396

0.9396-0.9396

=0

User Finley Adams
by
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