#int sin theta sin2theta sin3theta# ?
Evalute:
#int sin theta sin2theta sin3theta#
Evalute:
1 Answer
Explanation:
There's a few ways to tackle this problem, but personally I would expand the integrand by using various trigonometric identities, including the product-to-sum identities and double-angle formulas.
Here are the ones I used specifically for this problem:
So, let's use them. You can pick any pair. I picked
At this point, it's a simple indefinite integral: