Graph Inequality: I am thinking of a
number that is at most 0 and at least 2

Does anyone know how to do geometryme with this problem

Evaluate cos2θ for cosθ = square root of 3/2

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick