Question

Q no 7 angle between a vect and b vector

Answer 1

dot product nikal kar formula se angle find out kar sakte h

Answer 2

Answer:

vector A=4i^+6j^-3k^

|vector A|=√(4²+6²+(-3)²=√61

vector B=-2i^-5j^+7k^

|vector B|= √(4+25+49=√78

Vector A.vector B=|Al|B| cos@

cos@=(4i^+6j^-3k^)(-2i^-5j^+7k^)/(√61)(√78

cos@=(-8-30-21)/√4758=-59/68.978=-0.8553

cos@=cos(148.792)

@=148.782°