Find the angles between the vectors to the nearest hundredth of a radian $u=2i+j , v=i+2j-k $
2026-02-22 17:58:38.1771783118
Find the angles between the vectors to the nearest hundredth of a radian
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we have $$\cos(\phi)=\frac{\vec{u}\cdot\vec{v}}{|\vec{u}||\vec{v}|}$$ this is $$\cos(\phi)=\frac{4}{\sqrt{5}\sqrt{6}}$$ $$\phi \approx 43.09^{\circ}$$ or $$0.75$$ in radians