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#1 2015-06-12 23:55:52
- Geeky
- Member
- Registered: 2015-06-06
- Posts: 9
Geometrical questions
In an equilateral triangle ABC,D is a point on the side BC such that BD =1/3BC then 9AD^2 =?
Math may be a bitter truth but truth is always useful.....
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#2 2015-06-13 00:32:58
- Geeky
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- Registered: 2015-06-06
- Posts: 9
Re: Geometrical questions
And has uption like 1.3AB^2 2.5AB^2 3.7AB^2 4.8AB^2 Now try with these pls
Math may be a bitter truth but truth is always useful.....
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#3 2015-06-13 00:34:24
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Geometrical questions
I can not read that at all. Please post it like it was given to you.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4 2015-06-13 00:42:08
- Geeky
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- Registered: 2015-06-06
- Posts: 9
Re: Geometrical questions
1) 3AB^2
2) 5AB^2
3) 7AB^2
4) 8AB^2
HERE ^ refers to square sign
Math may be a bitter truth but truth is always useful.....
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#5 2015-06-13 00:52:14
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Geometrical questions
I am getting 3) 7AB^2.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#6 2015-06-13 00:58:57
- Geeky
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- Registered: 2015-06-06
- Posts: 9
Re: Geometrical questions
Right... pls explain it...
Math may be a bitter truth but truth is always useful.....
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#7 2015-06-13 04:14:05
- Geeky
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- Registered: 2015-06-06
- Posts: 9
Re: Geometrical questions
Pls explain
Math may be a bitter truth but truth is always useful.....
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#8 2015-06-13 06:43:48
- Bob
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- Registered: 2010-06-20
- Posts: 10,643
Re: Geometrical questions
hi Geeky,
To avoid fractions let's say AB = BC = CA = 3a
Then DC = 2a
Now you can use the cosine rule on triangle ADC
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
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