I have trivial question calculating unit vetcors for some given vectors, and the final sentence is:
Give your numerical values to better than 1% accuracy
Now this comes up from time to time and I've never had a clear explanation as to what is required:
so the surd form to my answer is:
2/sqrt(8) i + 2/sqrt(8) j
but 1% to me means: 0.71i + 0.71j - but *better than* implies to an order of magnitude one less again??
Thanks for any help in advance.
Cambridge at number one