Video Transcript
Find the bearing of 𝐵 from 𝐴.
Let’s begin by recalling what we
understand by the word “bearing.” A bearing is a fancy way of
measuring an angle. When we measure bearings, we
remember three things. We first measure from north or from
a north line. Once we’ve identified that north
line, we measure in a clockwise direction. In navigation, we also use three
digits to describe our bearing. Although depending on where you are
in the world, when we’re not working with navigation problems, we’ll sometimes use
two digits to represent a two-digit number or even include compass points.
The question wants us to find the
bearing of 𝐵 from 𝐴, so we’re going to measure the bearing at 𝐴 using the rules
we’ve given. Firstly, we identify the north line
at 𝐴. We then travel in a clockwise
direction until we hit the line segment that joins 𝐴 to 𝐵. According to our diagram, the angle
that these two lines make with one another is 75 degrees. And so, if we were going to be
following rule three, we would represent the bearing of 𝐵 from 𝐴 as 075. Now, of course, since this isn’t a
navigation problem, the use of three digits isn’t quite as necessary. So, this might also be written as
75 degrees. The bearing of 𝐵 from 𝐴 then is
075 or 75 degrees.
