In a rectangle, a diagonal forms a 36° angle with a side. find the measure of the angle between the diagonals, which lies opposite to a shorter side.

In a rectangle, all its four corners are 90°. If a diagonal forms a 36° angle with a side.  The measure of the angle between the diagonals which lies opposite to a shorter side is 99°.

Pls. see attachment.

Then just do it (lol)