If m3 is 52°, what is the measure of its vertical angle? A.
128°
B.
38°
C.
52°
D.
142°
i need answer asap!

C. 52 degrees

Step-by-step explanation:

Vertical angles share the same angle of measure.

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2