Math, asked by kajal160616, 6 months ago

cos (x+y)=cosx cosy-sinx siny,cos(x-y) =cosx siny+sinx Sony, sin(x+y)=since cosy+cosx Sony, find correct option?

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Answered by kirangusain84

Answer:

Ask Question CBSE - how to prove cos(x y)= cosxcosy-sinxsiny. ... cos(x+y)= cosx*cosy-sinx*siny . From the figure,. The angle of the upper ... C2 = cos2 y + cos2 x - 2*cosx*cosy + sin2 x + sin2 y - 2* sinxsiny.

Step-by-step explanation:

thanks to the same

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cos (x+y)=cosx cosy-sinx siny,cos(x-y) =cosx siny+sinx Sony, sin(x+y)=since cosy+cosx Sony, find correct option?​

Answers

cos (x+y)=cosx cosy-sinx siny,cos(x-y) =cosx siny+sinx Sony, sin(x+y)=since cosy+cosx Sony, find correct option?