3/4 + (1/3 divided by 1/6) - ( -1/2)

3 1/4

Step-by-step explanation:

3/4 + (1/3÷1/6) - (-1/2)

3/4 + (6/3) - (-1/2)

3/4 + 2 + 1/2

3/4 + 8/4 + 2/4

13/4

3 1/4

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