We have that
the measure of angle ∅=7*pi/6
the measure of its reference angle is?
remember that pi=180°
then
7*pi/6=7*180/6=210°------------> III Quadrant
Part A) its reference angle is 210°-180°=30°
Part B) sin(30°)=-0.5--------> negative because belongs III quadrant
By utilizing 3-dimensional geometry instead of 2-dimensional geometry.
Hope it helps!
The number that's follows is 3 I am not that sure
Its either A or D if its wrong sorry hope this helped tho
Answer:
sorry idk
Step-by-step explanation: