Please help solve the following problem:

The longer leg of a right triangle is shrinking at a rate of 0.4 one per minute and the shorter leg 15 growing at a rate of 0.5 on: per minute. Let E be the opposite angle to the longer leg. (:1) Find the rate of change of its hypotenuse when the longer leg is 30 cm and the shorter leg is 20 cm. 15 the hypotenuse growing or shrinking? (b) What is the rate of change of the angle 6 at the same moment