An observer 145 meters away sees a rocket launch into the air. The rocket reaches its maximum height when the observer is looking at an angle of 75 relative to the ground.

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