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int(dx)/(5+4cosx)=atan^(-1)(b" tan"(x)/(...

`int(dx)/(5+4cosx)=atan^(-1)(b" tan"(x)/(2))+C`, then a)`a=(2)/(3),b=-1/3` b)`a=2/3,b=1/3` c)`a=-2/3,b=1/3` d)`a=-2/3,b=-1/3`

A

`a=(2)/(3),b=-1/3`

B

`a=2/3,b=1/3`

C

`a=-2/3,b=1/3`

D

`a=-2/3,b=-1/3`

Text Solution

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The correct Answer is:
B
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