00:01
Okay then, so the helicopter is traveling at 100 miles per hour for 3 .2 hours.
00:08
We know that speed is distance over time.
00:14
So distance traveled is speed times time.
00:19
So 100 times 3 .2 means 320 miles is how far it's gone.
00:28
Now, direction is given by this.
00:33
So let's draw the grid.
00:38
Here is north, south, east and west.
00:43
And we are traveling south, 56 east.
00:49
So we're going down in this direction.
00:53
So this angle here is 56 degrees.
01:00
So, and that length is 300.
01:04
20 miles.
01:13
So let's get rid of that.
01:19
I want to work out we're now at location.
01:21
I want to work out how far south, in other words find the value of y and how far east i am from the starting point, find the value of x in this green triangle here...