Math, asked by grupeshmishrag, 21 days ago

Cot A -1/2-sec^2A = cotA/1+tanA prove it...???

Answers

Answered by rs5423693

2

Answer:

LHS=

(1+tan

2

A)

2

tanA

+

(1+cot

2

A)

2

cotA

(sec

2

A)

2

tanA

+

(cosec

2

A)

2

cotA

=

cos

4

A

1

cosA

sinA

+

sin

4

A

1

sinA

cosA

=sinAcos

3

A+cosAsin

3

A

=sinAcosA[sin

2

A+cos

2

A]

=sinAcosA=RHS

Hence proved.

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