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#1 2017-03-15 00:41:09

Mathegocart
Member
Registered: 2012-04-29
Posts: 1,880

Geometry Angle Problem

KlDhezQ.png..
I am supposed to find angle A with a bit of trig and geometric innovation.. but as my flu has only abated now, I have only made these observations..


The integral of hope is reality.

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#2 2017-03-15 01:48:20

bob bundy
Administrator
Registered: 2010-06-20
Posts: 8,071

Re: Geometry Angle Problem

hi Mathegocart

Sorry to hear about your flu.  Hope you're soon feeling better.

I find the key to many geometry problems is a good diagram.  Based on those angles your is a bit lop-sided.  Is this better?

46UGFv6.gif

It shouldn't take long to chase around those angles in right angled triangles.  If my diagram isn't correct please would you specify the angles like this  DAC = 90 etc.

Thanks,

edit: hhmmm.  Mine cannot be right as DM = 10 and MA = 4.  Please help correct mine.

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

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#3 2017-03-15 03:52:09

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Geometry Angle Problem

Hi;

Get better fast and when you grow up move to a warmer climate like Florida.

bit of trig and geometric innovation

Unnecessary! You can solve for the angle at A easily. Lots of times when those types pose problems the only way they can make it difficult is by providing misleading diagrams. You can defeat that by drawing a good diagram. Either you can call forth the powers of Giotto within or you can use the Gebra.


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 2017-03-15 06:57:35

Mathegocart
Member
Registered: 2012-04-29
Posts: 1,880

Re: Geometry Angle Problem

bobbym wrote:

Hi;

Get better fast and when you grow up move to a warmer climate like Florida.

bit of trig and geometric innovation

Unnecessary! You can solve for the angle at A easily. Lots of times when those types pose problems the only way they can make it difficult is by providing misleading diagrams. You can defeat that by drawing a good diagram. Either you can call forth the powers of Giotto within or you can use the Gebra.

My headache is alleviating a little bit, atan(10/4).


The integral of hope is reality.

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#5 2017-03-15 09:27:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Geometry Angle Problem

I do not know what to say... If CM and DA ain't straight lines then this could be a difficult problem...

If they are and I think the way the problem is stated they want them to be...

hwGvwTR.png

Then that is what I would do.

My headache is alleviating a little bit...

The number one cause of all headaches is dehydration. Drink plenty of water, no soda, no sweets, no coffee, those all help to dehydrate you further.


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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