Math, asked by bhuvanp84, 5 months ago

( cos 7x + \cos 8 x ) /(sin 7 x + sin 8 x ) = \cot x

Answers

Answered by smArora

6

Step-by-step explanation:

LHS=sin7x−sin5xcos7x+cos5x

=2sin(27x−5x)cos(27x+5x)2cos(27x+5x)cos(27x−5x)

=sinxcos6xcos6xcosx

=sinxcosx=cotx=RHS

Answered by RahulStarc

0

Answer:

( cos 7x + \cos 8 x ) /(sin 7 x + sin 8 x ) = \cot x

Step-by-step explanation:

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