What is the area of the obtuse triangle given below?

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder

Given right triangle abc, what is the value of tan(a)?

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.