Question

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Value of cos120°​

Answer 1

Value of cos 120° is $\frac{1}{2}$

Explanation:-

cos 120° = cos(90°+30°)

$\implies$2sin30°

$\implies$$\frac{1}{2}$

Answer 2

Answer:

Value of Cos 120 is -1/2

Explanation:

Cos 120 = Cos (180-60) = - Cos 60 = -1/2