Question

When is an equation called 'an identity'. Find the trigonometric identity 1 + tan²A = sec²A

Answer 1

1+tan^2
1+p^2/b^2
p^2+b^2/b^2
h^2/b^2
sec^2
hence proved plz Mark it as a brainliast

Answer 2

1+tan^2A= 1+ (sin^2/cos^2A)=(Sin^2A+ Cos^2A)/Cos^2A=1/cos^2A= Sec^2A.