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

If `cos(alpha+beta)=(4)/(5)` and `sin(alpha-beta)=(5)/(13) and alpha, beta` lie between `0^(@) and 45^(@)`, find the value of `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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