Determining the Angle Between Two Vectors

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What program do you use to visualize the vector

Michael_H_Nielsen
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Nice, easy and quick example. I hate videos that go on and on irrelevant stuff.
People just want to know how to calculate something and thats it.

Very good job! What program are you using to visualize the vectors?

Koppel
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Thank you! This information was very helpful. :)

Kyoyokodaichi
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What is I wanted to determine both the acute and obtuse angle between two vectors? Thank you for the help

tyfpvxu
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at time 2:30, when I calculate the fraction, I get -1.9638. and when i put this cos-1(-1.9638) I get an error saying "ERR DOMAIN".... anyone got any ideas?

lotus
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how can i find the angle without a calculator? i have an exam in a couple of days and we are not allowed to use scientific calculators only basic calculators and i dont know how to work out the angle:(

Seen
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my problem says A=4i-7j, B=-5i+3j (Find the angle between the vectors).

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