edited by
615 views

1 Answer

Best answer
1 votes
1 votes

By Appollonius theorem,  

(AB)2 + (BC)2 = 2((AD)2 + (BD)2)

AD = 3 since D is the midpoint of AC

(AC)2 = 2(32 + (BD)2)   ....{ (AB)2 + (BC)2 = (AC)2 using Pythagoras theorem }

$\therefore$ 62 = 2(9 + (BD)2)

On solving, we get BD = 3.

 

selected by

Related questions

2 votes
2 votes
1 answer
1
makhdoom ghaya asked Jul 20, 2017
1,020 views
Which month has the highest profit per employee?SeptemberJulyJanuaryMarch
1 votes
1 votes
0 answers
2
makhdoom ghaya asked Jul 19, 2017
454 views
Which year showed the greatest percentage increase in profit as compared to the previous year?$1993$ $1994$ $1990$ $1992$
2 votes
2 votes
1 answer
3
makhdoom ghaya asked Jul 18, 2017
4,488 views
The figures shows a circle of diameter AB and radius $6.5$ cm. If chord CA is $5$ cm long, find the area of triangle ABC.$60$ sq.cm.$30$ sq.cm$40$ sq.cm.$52$ sq.cm.
0 votes
0 votes
1 answer
5
makhdoom ghaya asked Jul 16, 2017
2,259 views
use the following data:A manufacturer can choose from any of the three types of tests available for checking the quality of his product. The graph gives the relative cost...