Find the exact value of cos -1050.OA.-3OB.-12/2OC. 1OD. 1/3Reset Selection

asked Apr 13, 2023 214k views

2 votes

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4 votes

Solution:

Given;

$\cos(-1050)$

Rewrite the expression using;

$\cos(-x)=\cos x$

Thus;

$\begin{gathered} \cos(-1050)=\cos(1050) \\ \\ \cos(1050)=\cos(330) \end{gathered}$

Then;

$\cos(330)=(√(3))/(2)$

CORRECT OPTION: D

Idan Asulin answered Apr 17, 2023

7.9k points

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