Help me pls

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17