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Prove that hat(i) xx hat(j) = hat(k) h...

Prove that `hat(i) xx hat(j) = hat(k)`
`hat(i) xx hat(j) = 1xx 1 sin 90 hat(n) = hat(n)`

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`hat(n)` is a unit vector perpendicular to the plane containing `hat(i) and hat(j) i.e., hat(n) = hat(k ) " where " hat(k)` is perpendicular to `hat(i) and hat(j)`
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