Prove that the vectors i−k, −i+j+2k, 2i−j−3k can form the sides of the triangle. I tried adding these vectors together, with the aim of getting a zero vector but I ended up with the following: i(1−1+2)+j(0+1−1)+k(−1+2−3)=2i−2k Rather than first informing my tutor about a possible mistake, I am first trying to check whether I am doing something wrong from my side.

Jack Ingram

Jack Ingram

Answered question

2022-10-14

Prove that the vectors i−k, −i+j+2k, 2i−j−3k can form the sides of the triangle.
I tried adding these vectors together, with the aim of getting a zero vector but I ended up with the following:
i ( 1 1 + 2 ) + j ( 0 + 1 1 ) + k ( 1 + 2 3 ) = 2 i 2 k
Rather than first informing my tutor about a possible mistake, I am first trying to check whether I am doing something wrong from my side.

Answer & Explanation

zupa1z

zupa1z

Beginner2022-10-15Added 20 answers

Hint: ( i k ) + ( i + j + 2 k ) + ( 2 i j 3 k ) can you continue on your own?

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