Question

tan^2 x - 1/(cos^2 x) = - 1 PROVE

Answer 1

Step-by-step explanation:

firsty we will change tan^2x into sin and cos

and take LCM and solve and

after that write sin^2x - 1 =-cos^2x

and divide numerator by denominator

we will find = -1

that is equal to RHS