Find the sum of the vectors a-2-k- b-2-4-5k- and c-6-7k-

The given vectors are #160; #160; a⃗=î 2ĵ+k̂, #10;b= 2î+4ĵ+5k̂ and c⃗=î 6#10;j 7k̂ ∴a⃗+b⃗+c⃗=(1 2+1)î+( 2+4 6)ĵ+(1+5 7)k̂ =0·î 4ĵ 1·k̂ ...

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Addition of Vectors

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Question

Find the sum of the vectors $\to a =^i - 2^j +^k, \to b = - 2^i + 4^j + 5^k$ and $\to c =^i - 6^j - 7^k$ .

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Find the sum of the vectors $a =^i - 2^j +^k$ ,
$b = - 2^i + 4^j + 5^k a n d c =^i - 6^j - 7^k .$

\to a =^i - 3^k, . \to b = 2^j -^k, \to c = 2^i - 3^j + 2^k

\to a = 3^i - 2^j +^k,

\to b = 2^i - 4^j - 3^k, \to c = -^i + 2^j + 2^k

\to a + \to b + \to c = 4^i - 4^j

\to a =^i -^j + 2^k, \to b = 2^i + 3^j +^k, \to c =^i -^k

\to a + 2 \to b - 3 \to c

\sqrt{78}

\to a =^i + 2^j + 4^k, \to b = 2^i - 3^j +^k

\to c =^i + 4^j - 4^k

\to a \times (\to b \times \to c)

\to A = 2^i - 3^j + 7^k, \to B =^i + 2^j

\to C =^j -^k .

\to A \cdot (\to B \times \to C) .

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