Finding a side with Finnick Odair
Cosine is simple, you substitute your given values into the equation and solve it in your calculator. This never works on a right triangle though. It is typically used when neither your angles or sides can be paired. Here's the equation:
C²=A²+B²-2(A)(B)Cos(Angle)
You'll always be given two sides and an angle. The 2 sides you are given will ALWAYS be A and B.
Here is a diagram to show how this works:
C²=A²+B²-2(A)(B)Cos(Angle)
You'll always be given two sides and an angle. The 2 sides you are given will ALWAYS be A and B.
Here is a diagram to show how this works:
Now, let's find a missing angle
The equation for this is a little bit different. This equation is actually like this:
Cos^-1(C²-A²-B²/-2AB)
You are given all the side lengths, but no angles.
To find the angle, you simply substitute the values of sides A, B, and C into the equation and solve it.
Here's a diagram for the visual learners:
Cos^-1(C²-A²-B²/-2AB)
You are given all the side lengths, but no angles.
To find the angle, you simply substitute the values of sides A, B, and C into the equation and solve it.
Here's a diagram for the visual learners: