Question

8. -Show that tan^2 A+tan^4 A= sec^4 A - sec^2 A ?​

Answer 1

Answer:

yes

Step-by-step explanation:

sec ^4 A−sec^2 A=sec 2 A(sec ^2 A−1)

=(1+tan ^2 A)(1+tan^2 A−1)

=tan ^2 A+tan ^4 A