How much warmer is 82 than -40?

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 is an irrational number

How many and of which kind of roots does the equation f(x)=x3−x2−x+1