Inner Product Spaces: Inner product, length, and angle
Angle
What angle do the vectors #\vec{a} = \rv{2,1,-1}# and #\vec{b}=\rv{1,2,1}# make in the inner product space #\mathbb{R}^3# with standard inner product?]
Give your answer in radians.
Give your answer in radians.
| #\varphi =# |
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