Given cos =4/3 sqrt 3 and tan-sqrt 11/4,find sin

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?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.