What is 9/10 as a decimal and percent

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

Which of the following are accepted without proof in a logical system? check all that apply.