hey guys, my first post on this site! i have this problem that i really have no idea where to go with, i know ive got to use differentiation turnining points but im just not sure how to apply it, any advice would be great, the question is this:

the torque T of an electric motor is given by:

T = 3 sin(2θ) + 6 sin(θ), where θ is the Torque position and 0 ≤ θ < (pi) using differentiation find

1.) the value of θ for which maximum torque occurs

2. the maximum torque

just a note i cant find the correct symbol for pi hence in the question i have written it as (pi)

if any one has any ideas about this any help would be great. thanks alot