Precalculus - Dot Product and Vector Projections

This lesson defines the dot product for vectors (two dimensions) and gives examples of two applications - law of cosines and projections. The concept of "orthogonal vectors" is explained. A basic understanding of vectors is necessary to comprehend this video ( • Precalculus - Vector B... ).

[@hoangho2717]

Wonderful lesson video! My students can have great understanding on this topic. Thanks so much!

[@dedeks3000]

Excellent video , Sir.

[@todayiglowup4286]

thanks for this video, it was the only video that made me understand

[@FadiSaid]

Very impressive.

[@Svajok]

Great video, everything put so simply! thanks a lot!

[@noorrahman692]

Owww, thanks for wonderful way of teaching! love it

[@aneleybekele1875]

fantastic lesson video

[@aneeqa1001]

Thank you so much

[@joyk.562]

Thanks for uploading!

[@malimeda1926]

thank you so much i was able understand everything

[@ainanhassan6081]

its really faiboulous.thankss a lot..

[@ula58]

Thank you

[@minigrinpins2528]

before watching: please help i have no clue what to do

[@harrydunleavy9591]

Very poorly explained. No explination as to how J compares with I or what j stands for. Also, 10(I)I) appears to be 10 times -I squared which would be 10 X -1(-1) = 10, not -10