Answer to Question #284772 in Physics for Elie

Question #284772

Vector 𝐴⃗ has a magnitude of 5.00 units, and vector B ⃗ has a magnitude of 9.00 units.

The two vectors make an angle of 50.0° with each other. Find 𝐴⃗ •B ⃗.

Expert's answer

The dot product is

\vec A·\vec B=5·9\cos50°=28.9.

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