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Hint: where .
Nope. Textbook says this
Use the hint I gave in conjunction with the hint your book provides (which I assumed you already knew).
Well, I'm not sure if this way works but it gave me the right answer. If = Sqrt 2/2 then that means the radian must be at pi/4. So I came up with a formula that looks like this. (4n+1)pi over 4. So I just plugged in 14 into n and I got my answer.
Yes:
There is NO such "smallest number" but there is an obvious smallest positive number.
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