SOLUTION: Law of sin/cos help? I know how to do these, I just have difficulty when the question doesn't give the angles, just a word problem to figure out, and I try drawing the picture and

Question 813251: Law of sin/cos help? I know how to do these, I just have difficulty when the question doesn't give the angles, just a word problem to figure out, and I try drawing the picture and it still does not help me. Anyways, was wondering if anyone could help me of know what a , b , c , alpha, beta, lambda is, which one am i trying to solve for? Thanks for any help!!

Points A and B are on opposite sides of a river. To find the distance between the points, a third point C is located on the same side of the river as point A. The distance between A and C is 43 feet, ∠ACB is determined to be 42� and ∠BAC is 105�. Find the distance between A and B. (Round your answer to one decimal place.)
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