What is the integral of (cos(θ)+sin(θ)) ?

The integral of (cos(θ)+sin(θ)) is sin(θ)-cos(θ)+C

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integral of (cos(θ)+sin(θ))

\int (cos (θ) + sin (θ)) d θ

sin (θ) - cos (θ) + C

Solution steps

\int cos (θ) + sin (θ) d θ

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int cos (θ) d θ + \int sin (θ) d θ

\int cos (θ) d θ = sin (θ)

\int sin (θ) d θ = - cos (θ)

= sin (θ) - cos (θ)

Add a constant to the solution

= sin (θ) - cos (θ) + C

What is the integral of (cos(θ)+sin(θ)) ?
The integral of (cos(θ)+sin(θ)) is sin(θ)-cos(θ)+C