A lunar module is resting on the moon's surface directly below a spaceship in its orbit, 13.0 km above the moon. (See the figure below.)
Two lunar explorers find that the angle from their position to that of the spaceship is 83.8°. How many kilometres are they from the lunar module? (Round your answer to three significant digits.)

A lunar module is resting on the moons surface directly below a spaceship in its orbit 130 km above the moon See the figure below Two lunar explorers find that class=