Hi, I have this two question dont know how to solve. can you circle out the answer and short explain.

Let f(x) = 3sin x for 0 s x S 2 Compute Ly (P) and U, (P) for the function f and the partition P = 10, 6' 4'3'21 LF (P) = UF (P ) =A lighthouse (L) is located on a small island 1200 meters from the nearest point P on a straight shoreline. Its light makes 2 revolutions per minute. Let A be the point where the beam of light strikes the shore and x the angle ALP. Write the distance D from A to P as a function of x. D( X ) = 1.5642 X How fast is the beam of light moving along the shoreline when it is 1000 meters from P? dD dt 25.55162024 ) meters per minute *" symbolic formatting help)