Consider two general three-dimensional vectors 𝑢̅ and 𝑣̅. If the magnitude of 𝑢̅×𝑣̅ is 𝑘 times larger than the magnitude of 𝑢̅. Prove that the magnitude of 𝑣̅ is greater to or equal to 𝑘. How do you solve it?
1 Answer
May 22, 2018
Please refer to the Explanation for a Proof.
Explanation:
Suppose that, the angle between
where,
Then, we know that,
But, we are given that,
Now,
Multiplying by