00:02
Hi, so yeah, i already kind of drew a lot on this.
00:04
So what i recommend i'm about to teach it maybe a little bit differently than how your teacher taught it, but this is this works i'm doing.
00:12
All right, so imagine you can draw a line that goes from point b to somewhere in between these two and we make a two right triangles like within any scaling triangle you can make two right triangles in a way so just imagine that.
00:31
This is probably not accurately where it would be.
00:33
Actually, i think it would be more about like right there.
00:37
But, okay, so here we have an 81.
00:42
And i know that this is 90 now.
00:45
That means i need to know that since the three interior angles of a triangle add up to 180, that means this part of it has to be nine.
00:52
Okay.
00:52
If that's nine, that says 30.
00:54
That means the opposite side of it is 21.
00:56
So this intersection of angle v makes.
00:59
Kind of splits it into a 9 degree angle and a 21 degree angle and also 81 plus 30 is 1111 and then 180 minus 111 69 it also works 21 69 90 so also it works okay the way to do this is since i created two right triangles i'm gonna figure out two sections and i'm gonna combine those two sections i'll combine the red thing and the green thing and and first up, i need to figure out what this imaginary line is.
01:33
How long with this imaginary line be? and using the sine function of trigonometry, sine theta, being the angle 81, is equal to the opposite.
01:46
I mean, that's supposed to write an o.
01:47
Yeah, that makes more sense...