Question

Find the value of $\cot {765}^{\circ }$

Answer 1

Given, $\cot {765}^{\circ }$

$=\cot (2\times {360}^{\circ }+{45}^{\circ })$

$=\cot \left({45}^{\circ }\right)$ since $\cot (2n\pi +\theta )=\cot \theta$

$=1$