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(a+2)sinalpha+(2a-1)cosalpha=(2a+1)iftan...

`(a+2)sinalpha+(2a-1)cosalpha=(2a+1)iftanalpha"i s"` `3/4` (b) `4/3` (c) `2a(a^2+1)` (d) `2a(a^2-1)`

A

`( 3)/( 4)`

B

`( 4)/( 3)`

C

`( 2a)/( a^(2) + 1)`

D

`( 2a )/( a^(2) - 1)`

Text Solution

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The correct Answer is:
B, D
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