I need help on this and the first person who answer correctly gets a BRANLIST (and please explain)​

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?