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Vector Addition

Find the resu...

Question

Find the resultant of 2 vectors whose magnitude is 6 and 8 and make an angle of 90 degrees between them.

A

12

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B

10

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C

6

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D

8

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Solution

The correct option is B
10

Magnitude of Resultant will be | $\to R$ | = $\sqrt{| \to A |^{2} + | \to B |^{2} + 2 | \to A | | \to B | c o s θ}$
R= $\sqrt{6^{2} + 8^{2} + 2 X 6 X 8 c o s 90^{o}}$
R= 10

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