00:01
I'm really glad that they gave you that picture.
00:03
So this is the height of the tree because i was actually about to put the four degrees on the other side.
00:10
So if we created a vertical right here, so a vertical will be 90 degrees, and then they say four degrees from that vertical.
00:19
So this total angle right here made with the ground is actually 94 degrees because you add those two together.
00:25
They also tell you sneak that over here.
00:30
On this side, they call it a degrees, but if you reread the directions, a is equal to 31 degrees.
00:38
And we also know the distance from the tree is 43, and they tell you that that's meters.
00:48
I really don't like that.
00:49
I wrote a 4 right there because where 43 is, instead of crossing it out, i erase it.
00:57
You actually have to figure out the measure of this angle because you need the size.
01:01
Length or the angle across from a side length you know so you find that out by doing 180 that's the interior angles of a triangle add up to be 180 and you start subtracting off the other numbers so i'm just using the calculator because i don't want to give you the wrong answer that that angle up there is actually 55 degrees after subtracting so i really like how they set up the problem for you h and 43 and it's i don't know if you know this it's called the law of signs...