Trigonometry

Question

Use algebra to rewrite the following identity in 2 different forms. 

tan²(Θ)+1=sec²(Θ)

Answer 1

tan^2(A) +1 = sec^2(A)

sin^2(A)/cos^2(A) +1 = 1/cos^2(A)

sin^2(A) + cos^2(A) = 1