Question

1+sin^2/cos^2=1+2tan^2​

Answer 1

Step by step equation

1/cos^2+sin^2/cos^2

1/cos^2=sec^2

Sin^2/cos^2=tan^2

Sec^2+tan^2=1+tan^2+tan^2

=1+2tan^2

Hence proved

Hope it helps u