What is the integral of 1/(1+cos(x)+sin(x)) ?

The integral of 1/(1+cos(x)+sin(x)) is ln|tan(x/2)+1|+C

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integral of 1/(1+cos(x)+sin(x))

\int \frac{1}{1 + cos ( x ) + sin ( x )} d x

ln tan (\frac{x}{2}) + 1 + C

Solution steps

\int \frac{1}{1 + cos ( x ) + sin ( x )} d x

Apply u-substitution

= \int \frac{1}{u + 1} d u

Apply u-substitution

= \int \frac{1}{v} d v

Use the common integral:

\int \frac{1}{v} d v = ln (∣ v ∣)

= ln ∣ v ∣

Substitute back

= ln tan (\frac{x}{2}) + 1

Add a constant to the solution

= ln tan (\frac{x}{2}) + 1 + C

What is the integral of 1/(1+cos(x)+sin(x)) ?
The integral of 1/(1+cos(x)+sin(x)) is ln|tan(x/2)+1|+C