A balloon is directly above one end of a bridge. The angle of depression of the other end of the bridge from the balloon is 48°. If the height of the balloon above the bridge is 122 m, then what is the length of the bridge ?
A is an angle in the fourth quadrant. If satisfies the trigonometric equation 3(3 - tan2(A) - cot(A))2 = 1.
Which one of the following is a value of A?