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Asked by Topperlearning User 13th August 2016, 7:46 PM
Answered by Expert
Answer:

L e t space a with rightwards arrow on top equals 3 i plus j minus 2 k space space b with rightwards arrow on top equals i minus 3 j minus 4 k
t h e n space a with rightwards arrow on top x b with rightwards arrow on top equals open vertical bar table row i j k row 3 1 cell negative 2 end cell row 1 cell negative 3 end cell cell negative 4 end cell end table close vertical bar equals i left parenthesis negative 4 minus 6 right parenthesis minus j left parenthesis negative 12 plus 2 right parenthesis plus k left parenthesis negative 9 minus 1 right parenthesis
equals negative 10 i plus 10 j minus 10 k
a r e a space o f space p a r a l l e log r a m equals space vertical line a with rightwards arrow on top x b with rightwards arrow on top vertical line equals square root of 100 plus 100 plus 100 end root equals 10 square root of 3 s q space u n i t s

Answered by Expert 13th August 2016, 9:46 PM
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