Question

How do you sketch the angle `285^circ` and find its reference angle?

Answer 1

`color(blue)(alpha = 360 - 285 = 75^@ " or " (5pi)/12^c, " in IV Quadrant"`#

Explanation:

![http://slideplayer.com/slide/7907411/]()

Find the reference angle for 285 degrees:

Determine the quadrant in which the terminal side lies. A 285-degree angle is between 270 and 360 degrees, so the terminal side is in Q IV
.
Do the operation indicated for that quadrant. Subtract 285 degrees from the angle, which is 360 degrees.

`alpha = 360 - 285 = 75^@ " or " (5pi)/12^c`