Question

0.6^+0.8^+ck^ it is a unit vector then c is

Answer 1

If it is a unit vector, then

|0.6i^+0.8j^+ck^| = 1

Under root 0.6^2 + 0.8^2 + c^2 = 1

0.36 + 0.64 + c^2 = 1^2

1+c^2 = 1

c^2 = 1 - 1

c^2 = 0

c = o