Question

don't worry main points waste kar hi hu.

solve it ​

Answer 1

Step-by-step explanation:

We have,

$\cosec(65^{ \degree} + \theta) - \sec(25^{ \degree} - \theta) -\tan(55^{ \degree} - \theta) + \cot(35^{ \degree} + \theta)$

$= \sec(90^{ \degree} - 65^{ \degree} - \theta) - \sec(25^{ \degree} - \theta) -\tan(55^{ \degree} - \theta) + \tan(90^{ \degree} - 35^{ \degree} - \theta)$

$= \sec(25^{ \degree} - \theta) - \sec(25^{ \degree} - \theta) -\tan(55^{ \degree} - \theta) + \tan(55^{ \degree} - \theta)$

$= 0$