The equation cos x = 2 has no solution.

Angle of elevation and angle of depression are always equal when measured from the same point.

If the shadow of a tree is √3 times its height, the sun's elevation angle is $x$ degrees.

From the top of a 60 m high building, the angle of depression of a point on the ground is 30°. The distance of the point from the base of…

The angle of elevation of the top of a tower from a point 100 m from its base is 30°. The height of the tower is:

In any triangle, sum of any two sides is greater than the third side.