Math, asked by reenageemonmg, 1 year ago

. Prove that sin A( 1/ - 1 / )= cos 2 A

Answers

Answered by Monchester100

2

LHS=

1−sinA

cosA

+

1+sinA

cosA

=

(1−sin

2

A)

cosA(1+sinA+1−sinA)

=

cos

2

A

2cosA

=

cosA

2

=2secA=RHS

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