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If 5 cos x+ 12 cosy=13 , then the maximu...

If` 5 cos x+ 12 cosy=13 `, then the maximum value of `5sin x+ 12 sin y ` is

A

12

B

`sqrt(120)`

C

`sqrt(20)`

D

`23 `

Text Solution

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The correct Answer is:
B
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