If least value of A is m and maximum value of B is M then cot^–1cot (m-πM / M)=

Question

If least value of A is m and maximum value of B is M then cot^–1cot\(\left(\frac{m - \pi M}M\right)\) =  

(a) \(- \frac{7\pi}8\)

(b) \( \frac{7\pi}8\)

(c) \(- \frac{\pi}8\)

(d) \(\frac{\pi}8\)

Answer 1

Correct option is (d) \(\frac{\pi}8\)