InterviewSolution
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InterviewSolution
| 1. |
\tan ^ - 1 ( \tan \frac 7 \pi 6 ) %2B \cot ^ - 1 ( \cot \frac 7 \pi 6 ) |
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Answer» tan^-1(tan 7pi/6) + cot^-1(cot 7pi/6) = tan^-1(tan(pi + pi/6)) + cot^-1(cot(pi + pi/6)) = tan^-1(tan pi/6) + cot^-1(cot(pi/6)) = pi/6 + pi/6 = 2pi/6 = pi/3 |
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