Find the values of the trigonometric function `cot``(-(15pi)/4)` – InterviewSolution

InterviewSolution

1.	Find the values of the trigonometric function `cot``(-(15pi)/4)`
Answer» As `cot(-theta) = -cot theta` `:. cot(-(15pi)/4) = -cot((15pi)/4)` `=-cot(4pi-pi/4)` `=-cot(2*2pi-pi/4)` `=-cot(-pi/4)` (As `cot(2npi+theta) = cot theta`) `=cot(pi/4) = 1` `:. cot(-(15pi)/4) = 1`

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