PLEASE HELP! Doing a geometry crossword...
3) this is the function which outputs an angle when a cosine value is input
7) the two sides of a right triangle that form the right angle
1) if the square of the length of the longest side of a triangle is equal to the sum of the squares of the lengths of the other two sides, then the triangle is a right triangle.
4) this is the function which outputs an angle when a tangent value is input