00:01
The top of a slide is 12 feet from the ground.
00:03
So let's make a triangle representing this.
00:09
And it has an angle of depression of 53 degrees.
00:12
So this is going to be a slide.
00:19
An angle of depression is from the horizontal looking down.
00:23
So this would be 53 degrees, which is the same as the elevation from the ground looking up.
00:30
So down here inside of this right triangle created with the height.
00:37
Of the slide, the ground, and the slide itself.
00:41
So the question is, what is the length of the slide? that would be the hypotenuse of the triangle that i highlighted in green.
00:52
You should hopefully be a little familiar with right triangle trig ratios, sine, cosine, and tangent.
00:59
So cotoa.
01:01
And so from this angle, 12 is the opposite...