Math, asked by maheshyamudala, 9 months ago

coso + cos(120+0) + cos (120 - 0) =

Answers

Answered by MrUnKnOwn33

1

Answer:

cos + cos 120° . cos- sin 120° - sin A + cos 120° cos + sin 120° sin

Cos [1 + 2 cos 120° ]

cos [ 1 + 2 ( - ½) ]

= 0

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