Check all that apply. cot theta is undefined for theta

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

What is the solution set of the quadratic inequality x^2-5< or equal to 0

What is the radical expression that is equivalent to the expression 27 1 over 5?