Math Is Fun Forum

Karn

Member

Registered: 2009-11-15

Posts: 14

The Sine Rule

I don't know how to solve the following problem (on the attatchement).

Thank you for any help

Last edited by Karn (2009-11-15 22:56:37)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: The Sine Rule

Hi Karn;

Where is the attachment?

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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.

Karn

Member

Registered: 2009-11-15

Posts: 14

Re: The Sine Rule

oops here it is

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: The Sine Rule

Hi Karn;

The law of sines is:

http://www.ucl.ac.uk/mathematics/geomat … rig11.html

For your drawing we call the left angle A, the top angle C and the rightmost angle X. The sides opposite these angles are called a,c ,x.

So just plug in:

Solve for SIn C

C = 52.493154°

Now you can find X by 180° - 67° - 52.493154° = 60.506846°

Can you now find the side opposite angle X, which is called x? Use the same method I have just showed you.

Last edited by bobbym (2009-11-15 23:44:04)

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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.