Let T be the triangular region in the xy-plane with vertices (0,0),(m,0),(m, n), where m, n are positive constants. Use a double integral in polar coordinates to calculate the average value of the x-coordinate, taken over all points in T. You may assume the formula for the area of the triangle.

if you need just tell me and i will come to the rescue.

step-by-step explanation:

step-by-step explanation:

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.