A) 2
B) 3
C) ? 2
D) ? 3
Correct Answer: D
Solution :
\[AB=\sqrt{{{(a-1)}^{2}}+{{3}^{2}}+0}=5\] \[\Rightarrow \,\,a-1=\pm \,4\]\[\Rightarrow \,\,a=-3,\,\,5\] \[CD=\sqrt{{{(a-1)}^{2}}+{{(a+5)}^{2}}+{{(a-1)}^{2}}}=6\] \[\Rightarrow \,\,{{a}^{2}}-2a-15=0\,\,\Rightarrow \,\,a=-3,\,\,5\] But common solution of (i) and (ii) is ? 3.You need to login to perform this action.
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