Question

cos²a+ tan^2 - 1 / sin^2 = tan ²A
fastttt​

Answer 1

Answer:

We know that cos2x+sin2x=1 (Identity)

Divide LHS of the given expression by the above identity

We have (cos2x−sin2x)/(cos2x+sin2x) ——— 1

Now divide expression 1 above by cos2x and you have the expression on the RHS = (1−tan2x)/(1+tan2x

Step-by-step explanation:

please mark me as brainlist