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If a is perpendicular to b and c, |a|=2, |b|=3, |c|=4 and the angle between b and c is (2pi)/(3), then [a,b,c] is equal to |
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Answer» `4sqrt3` `=|b||c| "sin" (2pi)/3 (a.hat(n))` `=|a||b||c| ("sin" (2pi)/3)` `[ :' a. hat(n)=|a||hat(n)| cos 0^(@)=|a|]` `=2xx3xx4xxsqrt(3)/2=12 SQRT(3)` |
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