Question

Prove that:
(1-cos²A) sec²A= Tan²A​

Answer 1

Answer:

(1-cos²A) sec²A= Tan²A

sin²A× sec²A = tan²A

$\frac{sin²A}{cos²A} = tan²A$

tan²A = tan²A

hope it will help you dear

Answer 2

(1-cos²A) sec²A= Tan²A

sin²A× sec²A = tan²A

SinA²A/CosA²A = TanA²A

tan²A = tan²A (Hence Proved)!!!