If -a-7-b-11-a-b-10 -3- then -a-b- equalsA- 10B- -10C- 2 -10D- 20

The correct option is C 2√(10)We have, |a⃗+b⃗|^2+|a⃗ b⃗|^2=2 (|a⃗|^2+|b⃗|^2) ⇒ 300+ |a⃗ b⃗|^2=2 (49+121) ⇒ |a⃗ b⃗|=2√(10) ...

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Applications of Dot Product

If |a⃗|=7,|b⃗...

Question

If $| \to a | = 7, | \to b | = 11, | \to a + \to b | = 10 \sqrt{3}$ , then $| \to a - \to b |$ equals

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\sqrt{10}

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2 \sqrt{10}

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Similar questions

| \to a | = 7, | \to b | = 11, | \to a + \to b | = 10 \sqrt{3}

| \to a - \to b |

| \to a | = 7, | \to b | = 11, | \to a + \to b | = 10 \sqrt{3}

| \to a - \to b |

| \to a | = 7, | \to b | = 11

| \to a + \to b | = 10 \sqrt{3}

| \to a - \to b |

| \to a | = 7, | \to b | = 11, | \to a + \to b | = 10 \sqrt{3}

| \to a - \to b |

| \to a | = 7, | \to b | = 11, | \to a + \to b | = 10 \sqrt{3}

(\to a + \to b)

(\to a + \to b) .

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