Asked by Sydney
Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a = <5, 4> , b = <2, −1>
Answers
Answered by
Reiny
come on, basic stuff
a dot b = |a| |b|cosØ, where Ø is the angle between them
<5, 4>dot<2, −1> = √(25+16)√(4+1)cosØ
10 - 4 = √205cosØ
cosØ = 6/√205
Ø = appr 65.2°
a dot b = |a| |b|cosØ, where Ø is the angle between them
<5, 4>dot<2, −1> = √(25+16)√(4+1)cosØ
10 - 4 = √205cosØ
cosØ = 6/√205
Ø = appr 65.2°
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.