$cos theta = (Deltax)/|Deltar|$

vCalc Reviewed

$cos theta = ( Deltax )/ |Deltar|$

$|r|" Magnitude of "Deltar.$

$(Deltax)" x component of vector r"$

Tags

The cosine of theta formula, cos(Θ) = Δx/|Δr|, /attachments/0b9d4d03-e6d1-11e5-9770-bc764e2038f2/V2 - r.png Vector r componentscomputes the cosine of the angle between the vector r and the x axis.
INSTRUCTIONS: Enter the following:

(Δx) The x component of vector r.
(|Δr|) The magnitude of vector r

The calculator returns the cosine of the angle.

References

Light and Matter by Benjamin Crowell, Chapter 7.2 Calculations ith magnitude and direction

cosθ=Δcos theta = (Deltax)/|Deltar|

References

$cos theta = (Deltax)/|Deltar|$