# Thread: Solve (sin x+pi) + x = 0

1. ## Solve (sin x+pi) + x = 0

Could anyone please solve that for me step by step?

2. yes ... get out your calculator, graph the function and calculate the zeros.

you can't solve this equation using elementary algebraic methods.

3. It may also help if you remember that

$\displaystyle \sin{(x + \pi)} = -\sin{x}$.

4. Solve (sin x+pi) + x = 0
Originally Posted by Prove It
It may also help if you remember that

$\displaystyle \sin{(x + \pi)} = -\sin{x}$.
did the OP mean $\displaystyle \sin(x + \pi)$ or $\displaystyle (\sin{x} + \pi)$ ???

5. Originally Posted by skeeter
did the OP mean $\displaystyle \sin(x + \pi)$ or $\displaystyle (\sin{x} + \pi)$ ???
I meant the latter, (my original). I do realise this can't be done with elementary algebra, what I would be interested in seeing such a step-by-step algebraic(ish) method.

6. Originally Posted by essaymasters
I meant the latter, (my original). I do realise this can't be done with elementary algebra, what I would be interested in seeing such a step-by-step algebraic(ish) method.
the zero is somewhere around -3. (from graphing). you can approximate it better using iteration methods like the Newton-Raphson method or something