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