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int(dx)/(cos (x+4)cos(x+2)) =...

`int(dx)/(cos (x+4)cos(x+2)) =`

A

`(1)/(sin 2)log|cos(x+4)^(2)|+c`

B

`(1)/(2)log|(sec(x+2))/(sec(x+4))| + c`

C

`(1)/(sin 2)log|(sec(x+4))/(sec(x+2))| + c`

D

`log|(sec(x+4))/(sec(x+2))| + c`

Text Solution

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The correct Answer is:
C
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