Two Forces !!!!!

Geometry Level 3

Two forces A A = = 5 i + 10 j − 20 k 5i + 10j -20k and B B = = 10 i − 5 j − 15 k 10i -5j - 15k act on a single point. What is the approx. measure of the angle between the vectors A A and B B ?

NOTE : Enter your answer in Degrees. Round your answer to the nearest degree.


The answer is 46.

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Gagan Raj by Gagan Raj , 23, India

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1 solution

Gagan Raj
Mar 15, 2015

We can use this formula to get the answer

c o s θ cos\theta = = A . B ∣ A ∣ ∣ B ∣ \frac{A .B}{|A| |B|}

I am not gonna post the whole solution as it is really very easy !!!!!

Enjoy And Learn !!!!!

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