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If a cos 2 theta + b sin 2 theta =c has...

If a `cos 2 theta + b sin 2 theta =c ` has ` alpha and beta ` as its solution, then the value of `tan alpha + tan beta` is

A

`-(2b)/(a+c)`

B

`(2b)/(a+c)`

C

`(3b)/(a+c)`

D

None of these

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The correct Answer is:
B
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