Find the Exact Value of Cosecant of 120 Degrees Using the Unit Circle

Find the exact value of the cosecant of 120 degrees. The angle is located on the unit circle and the y coordinate of this angle is the sine of 120°. The cosecant is written as 1/sin120° and this is used to find the exact value of the cosecant of 120°. The answer is given both in un-simplified form and it is also simplified by rationalizing the denominator. (A calculator would only give a numerical approximation.)

Timestamps
0:00 Introduction
1:00 Unit Circle
2:02 Rationalize the Denominator