Question

Prove that
Sec2 + cosec²a
tan a
+ cot a​

Answer 1

Step-by-step explanation:

Answer

sec 2 A+cosec 2 A

= 1+tan 2A+1+cot 2 A

= tan 2 A+cot 2 A+2

= tan 2 A+cot 2 A+2tanA.cotA

= (tanA+cotA) 2

=tanA+cotA (proved)