Find the value of A in each cases:
- cosA=√3/2

  A =

Step-by-step explanation:

Given that Cos A =

                cos A =

                       A =  

                      A =

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

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .