Vectors – Calculate angles of a triangle – Exercise 4471

Exercise

Given

$\vec{AB}=-2\vec{i}+\vec{j}$

$\vec{BC}=\vec{i}+2\vec{j}$

Calculate the angle of triangle ABC and the vector CA.

Final Answer

$45^{\circ},45^{\circ},90^{\circ}$

$\vec{CA}=\vec{i}-3\vec{j}$

Solution

Coming soon…

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