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the bottom of a ladder must be placed 7 feet from the wall. The latter is 21 feet long how far above the ground does the ladder touch the wall?

A man is laying on the ground relaxing and looking up at a plane that is passing by. If the plane s altitude is 39,000 feet and the man s eyes are located 4,000 feet away from a point on the ground directly beneath the plane, what is the angle of elevation for the man s line of sight to the plane?

s is inversely proportional to t . When s = 0.9 , t = 2 Work out s when t = 0.6

if you double the length of both legs of a right triangle, how does that affect the length of the hypotenuse?