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If a=i-2j-3k,b=2i+j-k and c=i+3j-2k, the find the value of c*(a*b). |
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Answer» Answer: Correct option is D 8 Given, a=2i+2j+3k,b=−1+2j+k and c=3i+j We need to find VALUE of a+tb⊥c ⇒(a+tb)⋅c=0 ⇒a⋅c+tb⋅c=0 ⇒t=− b⋅c a⋅c
⇒t=− (−i+2j+k)⋅(3i+j) (2i+2j+3k)⋅(3i+j)
⇒t=− −3+2+0 6+2+0
=8 Step-by-step EXPLANATION: |
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