Triangle tuz has vertices t(2,0), u(1,-2), and z(2,1). the triangle is rotated 90 degrees clockwise about vertex z. what are the coordinates of vertex u1?

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle