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In a right triangle ABC right angled at ...

In a right triangle ABC right angled at C,if tan A=`(8)/(15)`,then the value of `cosec^(2)A-1` i:

A

`(64)/(225)`

B

`(225)/(64)`

C

`(289)/(4)`

D

0

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Verified by Experts

The correct Answer is:
B
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