a surveyor is taking measurements of jordan lake. He finds a hidden cove that he wants to find the distance across. The surveyor knows he is 105 yards from one side of the cove and 65 yards from the other. He also knows the angle between his two lines of sight are 80 degrees. What is the distance across the cove?

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?