Math, asked by senthilm175, 3 months ago

Prove that sinx-siny/cos x+cos y=tanx-y/2

Answers

Answered by Mohibwallah

1

Answer:

identity-sinx-siny=2sinx+y/2cosx-y/2

-cosx+cosy=2cosx+y/2cosx-y/2

deviding by second to first,

:sinx-siny/cosx+cosy=tanx-y/2

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