Find Magnitude of V1 X V2 When Vectors are Perpendicular

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SUMMARY

The magnitude of the cross product |V1 X V2| for two perpendicular vectors V1 and V2 is calculated using the formula |V1| * |V2| * sin(Θ). Given that the angle Θ between the vectors is 90 degrees, sin(90) equals 1, leading to the conclusion that |V1 X V2| = |V1| * |V2|. The confusion arose from an incorrect input method rather than a misunderstanding of the mathematical principles involved.

PREREQUISITES
  • Understanding of vector operations, specifically cross products.
  • Familiarity with trigonometric functions, particularly sine values.
  • Knowledge of vector properties, including perpendicularity and magnitude.
  • Basic algebra skills for manipulating equations.
NEXT STEPS
  • Review vector cross product properties in linear algebra.
  • Explore trigonometric identities and their applications in vector calculations.
  • Practice problems involving perpendicular and parallel vectors to solidify understanding.
  • Investigate common input errors in mathematical software or calculators.
USEFUL FOR

Students studying physics or mathematics, particularly those focusing on vector calculus and cross product applications.

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Homework Statement


V1 and V2 are different vectors with lengths V1 and V2 respectively. Find |V1 X V2| if V1 and V2 are perpendicular.

Homework Equations


V1 X V2 = |V1|*|V2|sin(Θ)

The Attempt at a Solution


Since sin(90) = 1, V1 X V2 = |V1|*|V2|.
When I input this answer it says its incorrect and the answer does not depend on V1 and V2. Is there something I'm missing?
 
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If the answer says that, are you certain the problem says perpendicular and not parallel? As formulated, you are correct.
 
Yes it says perpendicular. The next question asked for parallel which is zero.
 
It's probably a problem with inputting the answer. Thank you anyways.
 

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