The value of the sum of two vectors $\overrightarrow A $ and $\overrightarrow B $ with $\theta $ as the angle between them is
The value of the sum of two vectors $\overrightarrow A $ and $\overrightarrow B $ with $\theta $ as the angle between them is
- A
$\sqrt {{A^2} + {B^2} + 2AB\cos \theta } $
- B
$\sqrt {{A^2} - {B^2} + 2AB\cos \theta } $
- C
$\sqrt {{A^2} + {B^2} - 2AB\sin \theta } $
- D
$\sqrt {{A^2} + {B^2} + 2AB\sin \theta } $
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