You are sailing from your lakeshore cabin to a marina 60º north of east and 0.5 miles across the lake. On your return trip, you decide to sail directly south and then west to get back to your cabin. Which of the following expressions uses the complementary angle of 60° to determine how far you would travel on your trip west? a. 0.5cos30° b. 0.5cos60° c. 0.5sin30° d. 0.5sin60°       Please select the best answer from the choices provided