Using trigonometry, find the x-component and the y-component for each vector. Refer to a diagram of each vector to correctly reason the sign, (+ or -), for each component.
Add up both x-components, (one from each vector), to get the x-component of the total.
Add up both y-components, (one from each vector), to get the y-component of the total.
Add the x-component of the total to the y-component of the total then use the Pythagorean theorem and trigonometry to get the size and direction of the total.
http://id.mind.net/~zona/mstm/physics/mechanics/vectors/componentAddition/componentAddition2.htm
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