cosx+sin(270-x)+sin(270+c)+cos(180+x)
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Step-by-step explanation:
Cos X + Sin(270-X) + Sin(270+C) + Cos(180+X)
Cos X - CosX - CosC - CosX [ ∵ Sin(270-X) = -CosX] , [Sin(270+C) = - CosC] , [ Cos(180+X) = -CosX]
- CosC - CosX
-(CosC + CosX)
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