00:01
So we are told that the skier skis 5 .4 radiance, only up in the third quadrant, when we are asked to find his coordinates.
00:20
So our critical angle is going to be this right here, which is going to be 2 pi minus 5 .4.
00:32
2 pi minus 5 .4 equals 0 .883 radiance.
00:40
So our x coordinates, x equals the radius.
00:47
I believe the radius is 0 .6 kilometers.
00:59
Oh, it's 4 in this image.
01:06
The radius equals 4 times cos.
01:13
0 .883.
01:18
0 .4 times cos.
01:22
And always make sure you're working in the right mode.
01:27
In trig gives us 2 .539 for x coordinate and y is going to be the same thing but we're in the fourth quadrant so y is negative four times sine of 0 .883 which gives us a y coordinate of negative 3 .091.
02:17
In c daisy.
02:32
So this time we're told we have a radius of 0 .6 kilometers.
02:45
He starts at the 3 o 'clock position so right here and travels 2 .4 kilometers counterclockwise.
02:55
So we need to figure out what how many radiance he's sweeping out...