1. ## Simultaneous Equations

Hey i've come across the following two equations and was just wodering if I could get some help solving them.

(1) 578cos(40) - x - xcos(y) = 0
(2) 578sin (40) - xsin(y) = 0

All help appriciated. Thanks.

2. Originally Posted by holmesb
Hey i've come across the following two equations and was just wodering if I could get some help solving them.

(1) 578cos(40) - x - xcos(y) = 0
(2) 578sin (40) - w=xsin(y) = 0

All help appriciated. Thanks.

Is this supposed to be an equal sign?

3. Hello, holmesb!

I don't suppose you LOOKED at what you posted.

What you wrote makes no sense!

I have a guess about what you meant, but I'll wait for your response.
(I won't hold my breath.)

4. Sorry about that. Had little time to whip this up. Ok.

(1) 578cos(40) - x - xcos(y) = 0
(2) 578sin (40) - xsin(y) = 0

5. Originally Posted by holmesb
Hey i've come across the following two equations and was just wodering if I could get some help solving them.

(1) 578cos(40) - x - xcos(y) = 0
(2) 578sin (40) - xsin(y) = 0

All help appriciated. Thanks.
I would probably look at each equation and make the the subject.

(1) x = 578cos(40)/(1+cos(y))

(2) x = 578sin(40)/sin(y)

Then making 578cos(40)/(1+cos(y)) = 578sin(40)/sin(y)

You now only have one variable. now re-arrange to elimate

578cos(40) and 578sin (40) and you should have

tan(40) = sin(y)/(1+cos(y))

From here you should try and find some funky trig identityto seal the deal.