Question

If r^=0.2i^+aj^-0.3k^ is a unit vector , then find the value of a

Answer 1

Answer:

√0.87

Explanation:

finding magnitude will give us the answer

Answer 2

first we should find magnitude

by √0•2+a+0•3 =1

√0•04+0•03+a=1

√1•13+a=1

a=√0•87