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Use the unit circle to find the exact value of the trig function cos(210°)
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1 vote
Use the unit circle to find the exact value of the trig function
cos(210°)

User Arjun J Gowda
by
8.4k points

1 Answer

0 votes

Answer:

-
√(3)/2

Explanation:

cos is negative in quad II

cos(210)= -cos(30) = -
√(3)/2

User James King
by
8.1k points
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