00:01
Okay, so we are given a cube and we have to find the angle of tqs to the nearest degree.
00:07
So since it's a cube, i could say whatever length i want because they're all going to be the same, all the black edges that are drawn.
00:15
So i'm just going to say each side is one.
00:19
Okay, so on the bottom, i want to find this diagonal line.
00:24
So if i had a square and i had a diagonal line, it would actually be really something.
00:38
Because if each thing is 90 degrees and both sides are one, that means it's isosceles, which means both angles are 90 degrees.
00:53
So i could use the 45, 45, 45, i said both angles are 45 degrees, my bed.
00:59
45, 45, 45, 90 rule.
01:03
So then that means this is going to be one square root of two.
01:10
So the triangle i'm looking for, it has 1.
01:13
One on the side, so t .s is one.
01:19
Sq is square root of two.
01:23
Okay, and we got 90 degrees.
01:27
And then now we have all the information we need to figure out what q, tqs is...