http://www.mindbites.com/lesson/1219 for full video http://www.mindbites.com/series/300-trigonometry-vector-basics for a bundle of videos on . For an even broader bundle of videos that cover and , check out http://www.mindbites.com/series/297-trigonometry-applications-of-trigonometry . To search for topic-specific help in our library of 400+ video products for Trigonometry & Pre-Calculus, please refer to our Trigonometry category at: http://www.mindbites.com/category/31-trigonometry and our Calculus Category at http://www.mindbites.com/category/23-calculus . To check out our full Trig & Pre-Cal video course, with 150 videos included, refer to: http://www.mindbites.com/series/845-trigonometry-full-course . Professor Burger shows you how to add and subtract vectors and use scalar multiplication to elongate or shrink vectors while maintaining their direction angle. The magnitude of a vector can be altered with scalar multiplication. A scalar is simply a number (positive or negative or a fraction) used to multiply a vector by, with the vector keeping its same direction and changing magnitude. Vectors can also be added and subtracted by simply adding or subtracting the components. It is also simple to find the answer graphically by creating a parallelogram with the two vectors, which Professor Burger demonstrates. Taught by Professor Edward Burger, this lesson was selected from a broader, comprehensive course, Precalculus.
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