Which proportion can be used to find the measure of de?
a. 12/x = 16/15
b. 12/16 = 15/x
c. 12/15 = x/16
d. 12/16 = x/15

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

x = 12

y = 1

for the points!

this is a good question! i'll do some research and come back when i have the answer!