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$Let \bar{a}, \bar{b}, \bar{c} be three unit vectors such that \bar{a} + 5 \bar{b} + 3 \bar{c} = \bar{0} then \bar{a} \cdot (\bar{b} \times \bar{c}) is equal to$

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a¯ . b¯

a¯ . b¯+2c¯

b¯ . a¯+c¯

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Correct option is D

a¯+5b¯+3c¯=0 Thus a¯,b¯,c¯ are coplanar. Hence a¯⋅(b¯×c¯)=0

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Let a¯,b¯,c¯ be three unit vectors such that a¯+5b¯+3c¯=0¯ then a¯⋅(b¯×c¯) is equal to

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

$Let \bar{a}, \bar{b}, \bar{c} be three unit vectors such that \bar{a} + 5 \bar{b} + 3 \bar{c} = \bar{0} then \bar{a} \cdot (\bar{b} \times \bar{c}) is equal to$