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

Yasan Glass asked Apr 17, 2022

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Yasan Glass asked Apr 17, 2022

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14 votes

Answer:

Explanation:

cos(210)=cos(180+30)=-cos 30

=-(√(3) )/(2)

SlimenTN answered Apr 23, 2022

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