Answer:
78º
Explanation:
Note : -
In mathematics, the reference angle is defined as the acute angle and it is measuring less than 90 degrees. It is always the smallest angle, and it makes the terminal side of an angle with the
x - axis.
Step 1 : -
Find where 192º lies in which quadrant.
192º lies in 3rd quadrant ( between
180º and 270º )
Step 2 : -
Subtract : 270 - 192
270 - 192 = 78º
( Since, 192º is greater than 180º, is subtracted from 270º )
Answer : -
78º is the reference angle for 192º.