Question : If 0.5î+ 0.8ĵ+ ck̂ is a unit vector, then the value of 𝑐 is
(A) \sqrt{0.11}
(B) \sqrt{0.22}
(C) \sqrt{0.33}
(D) \sqrt{0.89}
Answer : option (A)
Solution :
Question : If 0.5î+ 0.8ĵ+ ck̂ is a unit vector, then the value of 𝑐 is
(A) \sqrt{0.11}
(B) \sqrt{0.22}
(C) \sqrt{0.33}
(D) \sqrt{0.89}
Answer : option (A)
Solution :