NCERT Exercise 10.2 Q1 - Vector Algebra
Question: Compute the magnitudes of a = i-hat + j-hat + k-hat; b = 2 i-hat - 7 j-hat - 3 k-hat; c = (1/3)i-hat + (1/3)j-hat - (1/3)k-hat.
Answer: sqrt(3); sqrt(62); 1/sqrt(3).
Full step-by-step NCERT solution with diagrams on Something by Zero.