00:01
All right, and this one says, for any triangle a, b, c, its area can be found using the formula a equals one -half a -b, sign of angle c, right? so that is your, which you would fill in the blank.
00:23
So if you had a triangle, right, and you had, it's labeled a, b.
00:31
C, so you're told this is three, this is four, and then c was 45 degrees.
00:43
You could find this, right? so normally the formula is one -half base times height, but, you know, that's a lot more geometry to do.
00:56
So especially since you know the angle, you can do one -half a, which is three, b, which which is 4 and then the sign of 45 degrees.
01:09
Right.
01:10
So that's one half, 12 times the sign of 45, which is 6 sign of 45 and then 6 sign of 45...