Question

prove the following using identities. (LHS=RHS)

a)

1−tan

2



cot

2 −

1

= tan2

b) ( − cot )2 = 1

−

cos



1

+

cos



c) (1 + tan2 ) cos2 = 1

d)

cot

tan



+ 1 = 2?​

Answer 1

Answer:

Just multiply it

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