The Unit Vector (2D)

This video explains how to determine a unit vector given a vector. It also explains how to determine the component form of a vector in standard position that intersects the unit circle.

[murderedout]

Thanks for posting all of these videos, working on Cal 3 now and have been watching your videos since algebra!

[Mathispoweru]

Yes, it appears I graphed (3, -4) instead. Hopefully it still illustrates the concept.

[murrayivan]

Thx for posting this. I understood this 10x better than trying to read my somewhat confusing $160 Physics textbook...

[nitewlf]

Actually he was right. The same exact concepts can be used in physics. Vectors are extremely important regarding motion and force. Force vectors are found everywhere in physics. Math and physics just have a lot of crossovers. Unfortunately, physicists aren't so good at explaining it.

[ElmoAtWar]

Didn't know I'd have to know all this physics when programming in comp sci... Thanks

[BALease]

sadly i learned and retained more in those 8 mins than i did with my teacher. thank you

[lajwantiasnani]

A vector is quantity that have direction without direction it cannot be explained means every vector have direction then why unit vector is use to define the direction of vectors???

[Tilloya]

How can I solve this: A(vector)= -1i-5j+3k and B(vector)= 2i+3j+5k. How much measure the angle between this 2 vectors? I need some explanation if someone knows...thanks!

[kandyfreak]

thanks a lot but boy oh boy did you pointer hurt my eyes :o

[Cyprusfire]

physics... seriously. this is math not physics.