Question

Q.25 State the triangle law of vector addition. Derive a relation f
its resultant and angle subtended by resultant from horizontal. (3)​

Answer 1

Answer:

if two can be represent both in magnitude and direction by the two sides of a triangle taken in the same order , then the resultant is represented completely , both in magnitude and direction, by the third side of the triangle taken in the opposite order.

• suppose ewe have to add two vectors P and Q as shown . Now displace Q ( vector) parallel to itself in such a way that the tail if Q ( vector) touches the tip of P( vector) to the tip of Q ( vector) . According to the triangle law of vectors , this new vector is the resultant R ( vector) of the given vectors P and Q such that