Question

fill in the blank question
when two vectors are added, and the magnitudes of the two vectors and the contained between them are given, the magnitude of the resultant vector can be found using the law of.
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Explanation:

When adding two vectors, if the magnitudes of the two vectors and the angle between them are known, the law of cosines is used. The law of cosines relates the lengths of the sides of a triangle to the cosine of one of its angles. In the context of vector addition (where the two vectors and the resultant vector form a triangle), it helps calculate the magnitude of the resultant vector.

Answer:

First blank: angle; Second blank: cosines