Answer:
3
Step-by-step explanation:
Because the first triangle is a 45-45-90 triangle, the ratios are the side legs are x and the hypotenuse is x rad 2. So by dividing 6 rad 2 by rad 2, you get 6 for length CB. Which gets us to the next triangle which is a 30-60-90 triangle. The ratios are the side corresponding to the 30 degree angle is half the hypotenuse, 6, which makes x 3.
