Find the most general value of theta sa...

Find the most general value of ` theta` satisfyingn the equation
`tantheta=-1 and costheta=(1 )/(sqrt(2))`.

A

(a) `npi+(7pi)/(4)`

B

(b) `npi+(-1)^(n)(7pi)/(4)`

C

(c) `2npi+(7pi)/(4)`

D

(d) none of these

Verified by Experts

The correct Answer is:

C

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