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

Find The Exact Value Of Cos 1050OA3OB122OC 1OD 13Reset Selection class=

Answer :

Solution:

Given;

[tex]\cos(-1050)[/tex]

Rewrite the expression using;

[tex]\cos(-x)=\cos x[/tex]

Thus;

[tex]\begin{gathered} \cos(-1050)=\cos(1050) \\ \\ \cos(1050)=\cos(330) \end{gathered}[/tex]

Then;

[tex]\cos(330)=\frac{\sqrt{3}}{2}[/tex]

CORRECT OPTION: D

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