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Which expression is equivalent to cos120°?

Which expression is equivalent to cos120°?
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4 votes
Which expression is equivalent to cos120°?

User Samara
by
8.5k points

2 Answers

3 votes

Answer:

cos 240!

Explanation:

edge 21

User YAMAMOTO Yuji
by
8.5k points
5 votes
I hope this helps you



cos120=cos(180-60)= -cos60


cos120 =cos(90+30)= sin30
User Jen Zhang
by
7.9k points
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