Prove that:- (1-sin a) (1/sec a + tan a) = sec a – InterviewSolution

1.

Prove that:- (1-sin a) (1/sec a + tan a) = sec a

Answer» ONG>Answer:

(1−sinA)

(1+sinA)

×

(1+sinA)

(1+sinA)

=

1−sin

A

(1+sinA)

2

=

2

A

(1+sinA)

2

=

cosA

1+sinA

=

cosA

1

+

cosA

sinA

=secA+tanA

Hence proved.

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