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If asinx+b cos(x+theta)+bcos(x-theta)=d,...

If `asinx+b cos(x+theta)+bcos(x-theta)=d`, then the minimum value of `|cos theta|` is equal to

A

`1/(2|b|)sqrt(d^2 -a^2)`

B

`1/(2|a|)sqrt(d^2 -a^2)`

C

`1/(2|d|)sqrt(d^2 -a^2)`

D

`1/(2|a|)sqrt(d^2 -a^2)`

Text Solution

Verified by Experts

The correct Answer is:
A
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