Solve the equation \(5\cos (6x - 20)^\circ + 3 = 7.25\), for \(0 \le x \le 180\).

Abstract: A child's idea of an angle is a corner or edge; the sharper the corner or edge, the smaller is the angle, and hence expressions like “acute (sharp) angle,” “obtu e (blunt) angle,” etc. With ...