Using the law of sines, sin80°/3.1 = sin∠QSR/2.4 ∠QSR = sin^-1(2.4sin80°/3.1) ≈ 49.679° ∠SQR = 180° - 80° - 49.679° (angles in a triangle) = 50.321° sin50.321°/RS = sin80°/3.1 RS = (3.1sin50.321°/sin80°) = 2.4 units (nearest tenth) The length of line RS is 2.4 units.
18 degrees F because it dropped 12 degrees=10 hours x degrees=15 hours x is what you want to find out which is how many degrees it would drop in 15 hours. 12x15 then divided by 10 is 18.
