Parallelogram+Rule

**Adding vectors**
 The sum vector is determined by **Parallelogram Rule of addition**

Magnitude of sum vector is defined by **Law of Cosines** when only considering half the angle.

If tensions are equal, a and b are equivalent, and c is R.



If tensions are unequal, find and sketch the right triangles within the vector diagram. Use known information and trigonometry to solve for the two tension component vectors (SOH, CAH, TOA).