A drone is flying at 150 kilometers per hour at a constant altitude of 2 km above a straight road. The drone pilot uses radar to determine that an oncoming motorcycle is at a distance of exactly 4 kilometers from the drone, and that this distance is decreasing at 200 kph. Find the speed (in kph) of the motorcycle. Hint: At the end, remember to consider that the drone is moving towards the motorcycle at 150 kph. Speed cannot be negative. Note: Round to the nearest tenth.

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?