Vector sum
The magnitude of the vector u is 12 and the magnitude of the vector v is 8. The angle between vectors is 61°. What is the magnitude of the vector u + v?
Correct answer:
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Cosine rule uses trigonometric SAS triangle calculator.
See also our trigonometric triangle calculator.
You need to know the following knowledge to solve this word math problem:
- geometry
- analytic geometry
- vector
- planimetrics
- triangle
- The Law of Cosines
- goniometry and trigonometry
- cosine
Units of physical quantities:
Grade of the word problem:
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