00:01
So in this problem, we're told that we have a ramp that's 12 feet long.
00:04
So here's my ramp, and it's 12 feet.
00:07
And it's going to be used to reach a doorway that is 3 .5 feet above the level ground.
00:12
So if i draw in my triangle here, so the door is 3 .5 feet above the ground.
00:20
All right.
00:21
So we want to find to the nearest degree the measure the ramp makes with the ground in terms of the angle they mean.
00:27
So they want us to find this bottom angle.
00:29
So let's think about the values that we know.
00:32
Where you have the opposite side and we have the hypotenuse.
00:35
So to do this, we're going to use our sign function.
00:38
So we're going to find the sign of theta is equal to the opposite, which is 3 .5, divided by the adjacent, which is 12 feet...