In triangle DEF, FE= 12 and angle D =62. find DE to the nearest tenth

Name these type of angles shown check all that applies

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?

Is the square root of 4 plus the square root of 16 rational?