Question

help pliz
if you know this answer then reply other wise setup​

Answer 1

Step-by-step explanation:

LHS = (SEC X - 1)/(SEC X + 1)

(1/COS X-1) / (1 / COS X +1)

(1-COS X/COS X)/(1/COS X/ COS X)

(1 - COS X) / (1 + COS X)

NOW WE WILL MULTIPLY (1+ COS X) BY NUMr AND DENOr

(1 - COS X)(1+ COS X )/ (1+ COS X)²

(1 - COS²X)/(1+ COS X )²

SIN²X/(1+COS X)². = RHS

HERE "X" = THETA