Mathematics, 29.07.2019 15:50 911wgarcia
Find the distance between the complex numbers. z1=9-9i, z2=10-9i
Answers: 2
![\bf \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~{{ 9}} &,&{{ -9}}~) % (c,d) &&(~{{ 10}} &,&{{ -9}}~) \end{array}\quad % distance value d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2} \\\\\\ d=\sqrt{[10-9]^2+[-9-(-9)]^2}\implies d=\sqrt{(10-9)^2+(-9+9)^2} \\\\\\ d=\sqrt{1^2+0}\implies d=\sqrt{1}\implies d=1](/tpl/images/0147/1953/422bd.png)
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