1. Draw the triangle including the height h.

2. The height divide the right angle into 60° and 30° and the hypotenuse c into 2 parts: q under the 60°-angle, p under the 30°-angle.

3. The area of the right triangel is calculated by:

4.

5.

Plug in these values into the equation of the area:

After factor out the common factor you'll get: