1. The angle of depression of a submarine from another Navy ship is 28°. The submarine is 791 ft from the ship. About how deep is the submarine?
2. What is the length of a diagonal of a square with sides of length 4?
1 Sin = opp / hyp = depth/distance
sin 28 = depth / 791 take it from here !
2 Pythagorean theorem 4^2 + 4^2 = diag2
diag = sqrt ( 32) take it frome here !