If (1-tan^2theta)/(sec^2theta)=1/2 then ...

If `(1-tan^2theta)/(sec^2theta)=1/2` then the general value of `theta` is

A

`npipm(pi)/(6)`

B

`npi+(pi)/(6)`

C

`2npipm(pi)/(6)`

D

`npipm(pi)/(3)`

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The correct Answer is:

A

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