The soccer team at Cesar Chavez Middle School created a team flag using a parallelogram inside a rectangle. The diagram shows the dimensions of the flag.

What is the area of the non-shaded part of the flag in square inches?
12.25 in.²
29.75 in.²
14.75 in.²
21 in.²

Step-by-step explanation:

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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