Evaluate the expression:
(4x5)2-6+3=

Step-by-step explanation:

(4*5)2-6+3 = 20*2 - 6 + 3 = 40 - 6 + 3 = 34 + 3 =37

step-by-step explanation:

it's is b

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