Question

Evaluate Cos75+Cos15​

Answer 1

Answer:

The exact value of cos(75) is √6−√24 6 - 2 4 . Split 75 75 into two angles where the values of the six trigonometric functions are known

Step-by-step explanation:

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Answer 2

$\cos(75 ^{o} ) + \cos(15 ^{o} ) = 2 \cos( 45 ^{o} ) \cos(30 ^{o} ) = \frac{ \sqrt{6} }{2}$