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If cos x+cos y-cos(x+y)=(3)/(2), then...

If `cos x+cos y-cos(x+y)=(3)/(2)`, then

A

`1/2`

B

`(1 + sqrt(3))/(2)`

C

`(sqrt3)/(2)`

D

`(1 - sqrt(3))/(2)`

Text Solution

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The correct Answer is:
B
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