1.In ABC, CA=4sqrt2, CB=4sqrt3, and A=60. What is B in degrees
2.In triangle ABC,sin A=4/5. Find cos B
https://latex.artofproblemsolving.com/c/8/3/c83240e209d830cd2275ed9f771185a1d1c17733.png
3.Find DB in the diagram below.
https://latex.artofproblemsolving.com/f/6/f/f6f917a5c86b363a5cdf8871300d061dcd54fc0b.png
