B 20
29
C
21
1
Find sin(a) in the triangle.
A)20/21
B) 20/29
C) 21/20
D)21/29

B) 20/29

Step-by-step explanation:

Sin(a) is equal to opposite side length divided by hypotenuse.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2