Prove that tan^4x + tan^2x = cosec^2x - cosec^4x
Answers
Answered by
0
Answer:
Step-by-step explanation:
Tan^2=1/sec^2
Answered by
1
Answer:
LHS= tan^4x + tan^2x
tan^2(tan^2x+1)
tan^2x×sec^2x
(sec^2-1)×sec^x .....(1+tan^2=sec^2x )(sec^2x-1=tan^2x)
sec^4x-sec^2x
=RHS
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