Find the value of x no need to explain if you don't want in advance

x=25

Step-by-step explanation:

If you see that the lines AE and BC are parallel, you will know that angles ACB and CAE are the same. Since angle ADB is 50 degrees and its on a 180 degree line, you can know for sure that angle BDC is 130 degrees. Since we already know that angle DCB is the same as CBD since it is also x, both of those would have to be 25, meaning that x=25.

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