The most general value for which `tantheta = -1 " and " costheta = 1/( – InterviewSolution

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1.	The most general value for which `tantheta = -1 " and " costheta = 1/(sqrt(2)) " is " (n in Z)`A. `n pi+(7 pi)/4`B. `n pi+(-1)^(n) (7pi)/4`C. `2npi+(7pi)/4`D. none of these
Answer» Correct Answer - C Since `tan theta lt 0` and `cos theta gt 0, theta` lies in the fourth quadrant. Then `theta=7 pi//4`. Hence, the general value of `theta` is `2n pi+7 pi//4, n in Z`.

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