1. (cos^2)T/1-sinT to 1+sinT

Show the steps to get the left side to equal 1+sint

2. find an interval (0,2(pie)) to solve cotT= sqrt3/ 3

3. Determine the width of a river with markers placed at each side in line withe the base of a tower that rises 25m out of the ground. from the top of the tower, the angles of depression are 58 degrees and 38 degrees. how wide is the river?