Find the magnitude of a, the magnitude of b and the scalar product of vectors a and b.

asked Oct 9, 2023 64.5k views

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The magnitude of a is

$\lvert a\rvert=\sqrt[]{-5^2+1^2-9^2}=\sqrt[]{25+1+81}=\sqrt[]{107}$

The magnitude of b is

$\lvert b\rvert=\sqrt[]{-1^2-9^2-1^2}=\sqrt[]{1+81+1}=\sqrt[]{83}$

The scalar product of a. b is

Thetoast answered Oct 13, 2023

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