Question

Help me to prove it

Answer 1

Explanation:

1.cross multiply

2.solve the numerator and

multiply the denominator

3.the denominator comes in the formula

4.convert it and your answer is there

Answer 2

QUESTION:- PROVE THE IDENTITY

INDENTITY->

`(1)/(1 - \cos(A) ) + (1)/(1 +\cos(A) ) = 2 \cosec^(2) (A)`

ANSWER:-

`(1)/(1 - \cos(A) ) + (1)/(1 +\cos(A) ) \\ \\ \\ ((1 + \cos(A)) + (1 - \cos(A)))/((1 - \cos(A))(1 - \cos(A))) \\ \\\\ \frac{2}{ {1}^(2) - \cos^(2) (A) } = (2)/( \sin^(2) (A) ) \\\\\\ 2 \cosec^(2) (A) = 2 \cosec^(2) (A) \\ \\ \\ LHS=RHS \\ \\ HENCE \: \: \: PROVED`