If - - a - - 26 - - b - - 7 - and - - a - b - -35- find - a - b -

|→a |=√(2)6, |→ b |=√(7) |→a×→b |=|→a ||→b |sinθ=35 ⇒√(2)6√(7)sinθ=35 ⇒sinθ=35√(7)√(2)6=5√(726) ⇒sinθ gt;1 which is not possible. ...

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Multiplication with Vectors

If | → a | ...

Question

If $| \to a | = \sqrt{26}, ∣ ∣ \to b ∣ ∣ = \sqrt{7},$ and $∣ ∣ \to a \times \to b ∣ ∣ = 35,$ find $\to a . \to b .$

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If |\vec{a}| = \sqrt{26}, |\vec{b}| = 7 and |\vec{a} \times \vec{b}| = 35, find \vec{a} . \vec{b} .

| \to a | = \sqrt{26}, | \to b | = 7

| \to a \times \to b | = 35,

\to a \cdot \to b .

[7, - \sqrt{35}] ⋃ [5, \sqrt{35}] = [a, b]

A = (\begin{matrix} - 6 & - 1 9 & 1 \end{matrix}) B = (\begin{matrix} 2 & 0 - 3 & 5 \end{matrix})

C = (\begin{matrix} - 1 & 8 7 & - 7 \end{matrix})

\frac{(\sqrt{5} + \sqrt{3})}{(\sqrt{5} - \sqrt{3})} = a + \sqrt{15} b

(5 a - 7 b)^{3} + (9 c - 5 a)^{3} + (7 b - 9 c)^{3}

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