Math, asked by kumarikumarinidhi, 9 months ago

cos(x-y)=3cos(x-y)then cotxcoty=

Answers

Answered by sathyamargerate0410
0

Step-by-step explanation:

cos(x-y)=3cos(x+y)

cosxcosy+sinxsiny=3(cosxcosy-sinxsiny)

cosxcosy+sinxsiny=3cosxcosy-3sinxsiny

4sinxsiny=2cosxcosy

4/2=cosxcosy/sinxsiny

2=cotxcoty

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