# Solving A Trig Equation

• Jan 28th 2010, 04:41 PM
jfinkbei
Solving A Trig Equation
I am very stuck on this, any hints would be very helpful.

$\displaystyle sinx + \frac{2}{\pi}x -2 = 0$

Solve for $\displaystyle x$.
• Jan 28th 2010, 05:14 PM
pickslides
Quote:

Originally Posted by jfinkbei
I am very stuck on this, any hints would be very helpful.

$\displaystyle sinx + \frac{2}{\pi}x -2 = 0$

Solve for $\displaystyle x$.

You cannot solve for x using elementary algebra here.

You will need to employ a numerical method.
• Jan 28th 2010, 09:14 PM
Pulock2009
can we use a graph if we can plot it????
• Jan 28th 2010, 10:30 PM
Hello jfinkbei
Quote:

Originally Posted by jfinkbei
I am very stuck on this, any hints would be very helpful.

$\displaystyle sinx + \frac{2}{\pi}x -2 = 0$

Solve for $\displaystyle x$.

You can't normally solve an equation like this, other than by a numerical or a graphical method. However, this one is a bit 'sneaky'. Look at what happens if you put $\displaystyle x = \pi$.