English, asked by djdewance, 5 months ago

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Answers

Answered by attitudegirljatti

9

Answer:

Prove that:

cotA+cosA

cotA−cosA

=

cosecA+1

cosecA−1

ANSWER

LHS=

cotA+cosA

cotA−cosA

=

sinA

cosA

+cosA

sinA

cosA

−cosA

=

cosA(

sinA

1

+1)

cosA(

sinA

1

−1)

=

sinA

1

+1

sinA

1

−1

=

cosecA+1

cosecA−1

=RHS

Explanation:

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