How will I solve this without substitution?

The integral is (1+sin2θcscθ)dθ

2 Answers
Jun 5, 2018

Simplify using standard trig definitions

Explanation:

Recall the definition of csc as cscθ=1sinθ. So this expression simplifies to be 1+sinθdθ=θcosθ+C

Jun 5, 2018

See explanation.

Explanation:

According to the definition of cscθ we have:

cscθ=1sinθ

If we use this identity, then the integral is:

(1+sin2θsinθ)dθ=(1+sinθ)dθ=θcosθ+C