हल करना cos(x+ pi )- sin( pi -x)+ cos(2x+ pi )- cos(2x- pi ) | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\cos (x+ \pi )- \sin ( \pi -x)+ \cos (2x+ \pi )- \cos (2x- \pi )$$