How do you find the bearing and speed of a ship?

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

How is the interquartile range calculated?