Find the area of triangle formed by points O, A, B such that OA vector= i^ +2j^ +3k^ & OB vector= -3i^-2j^+k^

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\vec{O A} = \hat{i} + 2 \hat{j} + 3 \hat{k}, \vec{O B} = - 3 \hat{i} - 2 \hat{j} + \hat{k} .

3 i + j, 5 i + 2 j + k, i - 2 j + 3 k

ˆ i + 2 ˆ j + 3 ˆ k

3 ˆ i - 2 ˆ j + ˆ k

¯ ¯¯¯¯¯¯ ¯ O A = i + j + k, ¯ ¯¯¯¯¯¯ ¯ A B = 3 i - 2 j + k, ¯ ¯¯¯¯¯¯ ¯ B C = i + 2 j - 2 k

¯ ¯¯¯¯¯¯¯ ¯ C D = 2 i + j + 3 k

¯ ¯¯¯¯¯¯¯ ¯ O D

ˆ i - 2 ˆ j + 3 ˆ k

3 ˆ i - 2 ˆ j + ˆ k

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