Math, asked by paragpg, 3 days ago

prove that cosA-sinA+1 upon cosA-sinA-1

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Answers

Answered by XxcuteboyxX2
0

Answer:

LHS=

cosA+sinA−1

cosA−sinA+1

dividing Nr and Dr by sinA we get,

=

sinA

cosA

+

sinA

sinA

sinA

1

sinA

cosA

sinA

sinA

+

sinA

1

=

cotA+1−cosecA

cotA−1+cosecA

=

cotA+1−cosecA

cotA+cosecA−(cosec

2

A−cot

2

A)

=

cotA+1−cosecA

(cotA+cosecA)(1−cosecA+cotA)

=cotA+cosecA=RHS

hope it is helpful

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