Question

Find x, if AABC is right angled at A, where
A=(4,2,3), B=(3,1,8), C=(x,-1,2).​

Answer 1

Answer:

IntheΔABC

BC  

2

=AC  

2

+AB  

2

 

(3−x)  

2

+4+36=1+1+25+(4−x)  

2

+9+1

9+6x+x  

2

+40=37+16−8x+x  

2

 

2x=−49+37+16

=−49+53

=4

x=2

​  

 

Step-by-step explanation: