Prove that the equation of the straight line, the reiprocals of whose intercepts on the axes are m and n is mx + ny = 1. Also prove that m² + n² = 1/p² where p is the perpendicular distance of the line from origin.

What value of x is in the solution set of 4x – 12 s 16 + 8x?

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 magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how