Section 9-1

So today we are going to be learning some geometry. This stuff is super easy because it's basically just putting things into your calculator. You must learn SOHCAHTOA. This means that sine=Opposite/Hypotenuse, Cosine=adjacent/Hypotenuse, and Tangent=Opposite/Adjacent.

When finding an angle, you take the inverse of either Sine, Cosine, or Tangent.

Now for the example:

Let's say that:

A=32º

a=42

b=48

Find B and c

The first we are going to find B.

So you use the TOA part of SOHCAHTOA.

You are finding the angle, so you get Tan^-1=48/42

Which gives you 48.814

Next we are going to find c.

so you use the SOH par of SOHCAHTOA

Sine32º=42/c

Solve for c so you get 42/Sin32º

Which gives you 79.257

So you're final answers would be B=48.813 and c=79.257º

Hope you learned something!

---Carleyyy!