If - a - b - a - b -1- then - a - b - is equal toA- 1 B- -2C- -3D- None of these

The correct option is C √(3)We have, |a⃗+b⃗|^2+|a⃗ b⃗|^2=2 (|a⃗|^2+|b⃗|^2) ⇒ 1+ |a⃗ b⃗|^2=4 ⇒ |a⃗ b⃗|^2=3 ...

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Applications of Dot Product

If | a |=| b ...

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If $| \to a | = | \to b | = | \to a + \to b | = 1, t h e n | \to a - \to b |$ is equal to

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\sqrt{2}

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\sqrt{3}

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None of these

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| \to a | = | \to b | = | \to a + \to b | = 1, t h e n | \to a - \to b |

\vec{a,} \vec{b,} \vec{c}

\frac{\vec{a} \cdot (\vec{b} \times \vec{c})}{(\vec{c} \times \vec{a}) \cdot \vec{b}} + \frac{\vec{b} \cdot (\vec{a} \times \vec{c})}{\vec{c} \cdot (\vec{a} \times \vec{b})}

\frac{a}{6} = \frac{b}{5} = \frac{c}{11}, t h e n \frac{a + b + c}{c}

f (x) = \sqrt{x}, g (x) = e^{x - 1}, a n d \int f o g (x) d x = A f o g (x) + B t a n^{- 1} (f o g (x)) + C

a = l o g_{24} 12, b = l o g_{36} 24, c = l o g_{48} 36

1 + a b c

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