Calculus - plz help find average rate of change of the function over a given interval 1. The problem statement, all variables and given/known data h(t) = sin t, [3pi/4,4pi/3] plz help me solve this, try to give me an explanation on every step plz. i checked but i can't find anything on this in the book. i am basically having problem with this because of the sin. 2. Relevant equations 3. The attempt at a solution i got to there also but i dont know how to solve the sin part. how does the square root come in.