Question

sate triangle law of vectors?

Answer 1

According to the triangle law,if two vectors acting on a particle at the same time are represented in magnitude and direction by the two sides of a triangle taken in one order,their resultant vector is represented in magnitude and direction by the third side of the triangle taken in opposite order.

Here two vectors are A and B and the resultant C is taken as the above rule 

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Answer 2

Triangle Law of Vector addition states that if two vectors can be represented in both magnitude and direction by three sides of triangles taken in same order, then their resultant is represented completely, both in magnitude and direction, by the third side of triangle taken in opposite order.

See the image for understanding.