00:01
Suppose i have a right triangle and i know two sides, but i want to solve for a missing angle.
00:05
How can i do that? well, what's the relationship between angles and sides of a right triangle? well, these are what's known as my trig ratios, sine, cosine, and tangent.
00:14
One acronym to help us remember them is sohcahtoa.
00:18
Sine is the ratio opposite over hypotenuse, cosine's adjacent over hypotenuse, and tangent's opposite over adjacent.
00:24
So what am i given here? which relationship between my angle and four? well, they're across, so they're opposite.
00:30
And my angle at nine, right next to each other, it's not hypotenuse, because it's not across from the 90, but it's adjacent.
00:37
So i know opposite and adjacent...