Question

Show that tan⁴x +tan²x = sec⁴x ‐ sec²x

Answer 1

Answer:

hope it helps you..........

Answer 2

Answer:

As we know,

1+tan^2x=sec^2x

tan^2x=sec^2x-1

Now,

LHS

tan^2x(tan^2x+1)

(sec^2x-1)sec^2x

sec^4x-sec^2x

=RHS