Finding Direction Angles of Vectors

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Presentation transcript:

Finding Direction Angles of Vectors

Direction Angles Any vector that begins at the origin can easily be translated into a directional angle This is usually done with a tangent ratio Keep an eye out for 30,45,60 degree angles using the triangles!

Finding the directional angle of a vector Example 1 – Uses the special triangles U = 3i + 3j Convert to i/j coordinates Plot vector Set up tangent ratio Find reference angle Use Quadrant to specify directional angle

Finding the directional angle of a vector Example 2 – Does not use the special triangles V = 3i – 4j