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Find the value of $\cos 105 ° + \cos 75 ° .$

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Correct option is C

cos105°+cos75°=2cos105°+75°2cos105°-75°2=2cos90°cos35°=0 as cos90°=0

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Find the value of cos105°+cos75°.

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Find the value of $\cos 105 ° + \cos 75 ° .$