Please help, thank you!

16. In the figure, ABCD is a rectangular stage on the horizontal ground, where BC = 15 m. N is a point on AD and P is a spotlight vertically above N such that 20 9) PC = 25 m. When a performer is at B, the angle of A D depression of B from P is 50. When the performer Ni walks 10 m from B to E along BN, the angle that the spotlight P rotates according to the movement of the 10 m performer is 20. B 15 m (a) Find the distance between B and P. (b) When the performer walks from B to C along BC, the light emitted from P moves from B to C along BC. Find the angle rotated by the spotlight. Explain (c) When the light emitted from P moves from B to C along BC, is it possible to find a point K on BC such that the angle of depression of K from P is 60 ? Explain your