Question

State triangle law of vectors addition. Find analytically the magnitude and dirction of resultant vector.

Answer 1

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Triangle law of vector addition states that when two vectors are represented as two sides of the triangle with the order of magnitude and direction, then the third side of the triangle represents the magnitude and direction of the resultant vector.

Answer 2

Answer:

If two sides of the triangle represent two vectors, then the resultant is represented by the third side of the triangle in reverse order. This is called triangle law of vector addition.

Magnitude of vector R=$\sqrt{P^{2}+Q^{2} +2PQcostheta}$

Direction of vector R=Qsintheta/P+Qcostheta