Answer :

Answer:

6sqrt(3) = b

a= 6

Step-by-step explanation:

Just apply Soh Cah toa

opposite = a

sin(30) = opposite/hypotenuse

sin(30) = a/12 a= 6

Then do pythagoras

b^2 + 6^2 = 12^2

144-36 = 108

sqrt(108) = sqrt(36*3) = 6sqrt(3) = b

Hope that answers your question