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Let cos (alpha+beta) = 4/5 and sin(alph...

Let ` cos (alpha+beta) = 4/5` and `sin(alpha-beta)=5/13 ` where `0<= alpha,beta<= pi/4` then find ` tan (2alpha)`

A

`25/16`

B

`56/33`

C

`19/12`

D

`20/7`

Text Solution

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The correct Answer is:
B
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