Answer:
C
Step-by-step explanation:
Using the trigonometric ratios, C would be correct.
Answer:
B
Step-by-step explanation:
Sin(a)=

To find sin(2a) = 2*sin(a)*cos(a), we ned to find cos(a)
We know that,
sin²(a) + cos²(a) = 1
cos(a) = 
cos(a) = 
Thus, cos(a) = +- 
We know a is in second quadrant and thus cos(a) is -
because cosine is always negative in the second quadrant.
Therefore,
sin(2a) = 2*sin(a)*cos(a) = 
I think the ratio would be 5 : 2 : 2 : 3
The probability of picking two blue would be 2/9 because you would use the 2 out of the 9