00:01
A man is lying on the beach and is flying a kite.
00:03
He holds the end of the kite string at ground level and estimate the angle of elevation to 55 degree.
00:11
If the length of the string is 470 fit, we need to find how high is the kite above the ground.
00:18
So let x be the height of the kite above the ground.
00:22
Now we can represent this situation in a diagram as this.
00:27
Suppose this is the position of the kite.
00:29
This is the position of the kite.
00:34
And the string, this is a string of the kite and it makes an angle of 55 degrees with the ground.
00:42
This is the angle of elevation.
00:44
We need to find this height, that is the height of the kite above the ground, we need to find this length.
00:51
Let it be x.
00:52
Let x be the height of the kite above the ground.
00:55
Now the length of the string is 470 fit...