Question

cosecA–cotA=4/3 হলে cosecA+cotA=?

Answer 1

Step-by-step explanation:

Let A = x(its just to make it simple to write on Brainly) &

cosec(x) + cot(x) = y, then

$\csc(x) - \cot(x) = \frac{4}{3} \\ = > (\csc(x) - \cot(x))( \csc(x) + \cot(x)) = \frac{4y}{3} \\ = > { \csc}^{2} (x) - { \cot}^{2}(x) = \frac{4y}{3} \\ = > 1 = \frac{4y}{3} \\ = > y = \frac{3}{4}$

IDENTITY USED :

cosec²x - cot²x = 1

HOPE IT HELPS :D