Find the area of the triangle formed by vector A and B as adjacent side measure in meter a= -i+2j+ k and b=2i+j+3k
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the ans . 10√3
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draw a perpendicular from B on AC meeting it at D.
Thrn area of triangle = 1/2 AC × BD ,
where BD could be written as BCSinC.
So, area = 1/2 × AC ×BCSinC
1/2 (AC×BC) in vectors
Thrn area of triangle = 1/2 AC × BD ,
where BD could be written as BCSinC.
So, area = 1/2 × AC ×BCSinC
1/2 (AC×BC) in vectors
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