- What is this problem about?
This problem is about
using the sum and difference formulas when there are given values. We
are given the quadrant of the location of the values which determine the
signs of the values. Depending the placement of the values will
determine if sin, cos, and if tan will be either positive or negative.
- What does the viewer need to pay clsoe attention to in order to do the problem correctly?
The
viewer needs to pay attention that in order to find the other side of
the triangle we needed to use the Pythagorean Theorem. Once we get an
answer we also need to make sure that it is reduced as much as possible.
The viewer needs to pay close attention to how the formula is written,
if (u+v) is given then we write the formula that starts with u and vice verse.