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Magnitude of Sum of Two Equal Vectors
If:
$$|\vec a|=|\vec b|=a$$
then:
$$|\vec a+\vec b|=2a\cos\frac{\theta}{2}$$
Usage
- Used to simplify resultant calculations for equal vectors.
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Magnitude of Sum of Two Equal Vectors
If:
$$|\vec a|=|\vec b|=a$$
then:
$$|\vec a+\vec b|=2a\cos\frac{\theta}{2}$$
Usage
- Used to simplify resultant calculations for equal vectors.
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