// * PLEASE ANSWER * // AB is tangent to circle C. Find AC to two decimal places.

19.92

Step-by-step explanation:

To find the length of AC we need to use the Pythagorean theorem: a^2 + b^2 = c^2

a = 6 b = 19

a^2 = 36

b^2 = 361

36 + 361 = 397

c^2 = 397

to find c we take the square root of 397

take the first 2 decimals for the answer

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