Hi;
how do I find the coordinates for points on the unit circle knowing just its degree in radians ie what the coordinates for 26/45pi = 104degree.
Thanks.
I would say that you don't know how to use your own calculator.
Look at this website.
BTW, degrees are really obsolete for most mathematics courses.
You have your calculator set to degrees. So $\cos(104^\circ)$ is correct. $\cos\left(\dfrac{26\pi}{45}^\circ\right)$ is not correct. $\cos(104^\circ) = \cos\left(\dfrac{26\pi}{45}\right)$ (Notice the lack of a degree symbol on the RHS of the equation, because the RHS is in radians rather than degrees).