37. Five mark exercise problem XIII

If the angle of elevation of a cloud from a point '\(h\)' meters above a lake is \(\theta_1\) and the angle of depression of its reflection in the lake is \(\theta_2\). Prove that the height that the cloud is located from the lake is \(\frac{h(tan \ \theta_1 + tan \ \theta_2)}{tan \ \theta_2 - tan \ \theta_1}\).