The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s= 2 sin pi t + 3 cos pi t, where t is measured in seconds.

(a) Find the average velocity during each time period:

(i)[1,2]

(ii) [1,1.1]

(iii) [1, 1.01]

(iv) [1, 1.001]

(b) Estimate the instantaneous velocity of the particle when t=1.

Can someone please help me with this question, the trig functions have me confused. Please and thanks again.

(a) Find the average velocity during each time period:

(i)[1,2]

(ii) [1,1.1]

(iii) [1, 1.01]

(iv) [1, 1.001]

(b) Estimate the instantaneous velocity of the particle when t=1.

Can someone please help me with this question, the trig functions have me confused. Please and thanks again.