While knowing the different units used in angle measurement is important, the real purpose behind the angle measurement is for us to be able to use these measurement units to calculate the size or area of different objects that involve circles. In Calculus, it is often necessary to convert degrees to radian measure since the radian measure is often used in problems involving circular and trigonometric functions. In real life, are there instances that you need first to convert something for this to function or be more useful? Cite some examples