Math, asked by sanjanarajN, 10 months ago

cos(x+y)=? cosx+cosy=?

Answers

Answered by ammaraliarain24

2

Answer:

cos(x+y)= cosxcosy-sinxsiny

Answered by rishu6845

2

Answer:

cos(x+y)=cosx cosy -sinx siny

cosx+cosy=2cos(x+y/2) cos(x-y/2)

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