victorbanks455 victorbanks455
  • 10-07-2021
  • Mathematics
contestada

Two vectors m and n are defined by 3i+4j and n=2i-j. find the angle between m and n​

Respuesta :

Аноним Аноним
  • 10-07-2021

Answer:

[tex]{ \tt{m.n = |m| |n| \cos( \theta) }} \\ { \tt{ (3 \times 2) + (4 \times - 1) = (5)( \sqrt{5}) \cos( \theta) }} \\ { \tt{ \cos( \theta) = \frac{0.4}{ \sqrt{5} } }} \\ \theta = 79.7 \degree[/tex]

Answer Link

Otras preguntas

Every substance has a specific value of heat required to change the temperature of 1 gram of the substance by 1 degree Celsius. Specific heat is found by using
Please help I'll rate brainiest answer and 5 stars I suck at math
Which two groups of organic compounds serve as energy sources?
The hydrogens and oxygen of a water molecule are held together by ______ bonds. a.electron b.hydrogen c.covalent d.osmotic
Copper is part of a complex that regulates metabolism of this mineral. 1. Calcium 2. Iron 3. Selenium
The ring of muscle tissue that controls the pupil's size is called the:
Please someone solve 16x-4y=2 it’s a linear equation !
Inbreeding within a population is an example of
Which if these are least likely to describe a distance below sea level? A. Whole number B. Integer C. Rational number D. Real number Thanks!
Which type of bond will form between two chlorine Atoms