CBSE Class 11-science Answered
vectors
Asked by sahare | 10 Feb, 2010, 06:01: PM
Expert Answer
Dear Student
a=4i+j+3k , b=i+3j+2k and c=2i+7k
ab= sqrt [ (4-1)^2+(1-3)^2+(3-2)^2]= sqrt 14
bc=sqrt [ (1-2)^2+(3-0)^2+(2-7)^2]=sqrt 35
ac=sqrt [ (4-2)^2+(1-0)^2+(3-7)^2] =sqrt 21
here bc^2=35
ab^2 =14
ac^2=21
bc^2= ab^2 +ac^2
this is the Pythogous theorem for right angle triangle
So abc is a right angle triangle
Regards
Team Topperlearningf
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