SarahhRenee3619 SarahhRenee3619

25-12-2020
Physics

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The magnitude of the resultant of two vectors of magnitude 3 units and 4 units is 5 units. What is the angle between two vectors?

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ChoiSungHyun ChoiSungHyun

25-12-2020

Explanation:

Using Cosine rule, we have 5² = 3² + 4² - 2(3)(4)(cosx).

=> cosx = 0, x = 90°.

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