Math, asked by shubhanpunde, 7 months ago

prove that cosa/1+sina=cot(a/2)-1/cot(a/2)+1​

Answers

Answered by SonalRamteke
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

Hence proved...

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