Finding "y" in a trigonometric function (1 Viewer)

[BlueGas]

Let's say y = sin(x) + cos(x) and x = 5Pi/3. When subbing in x to find y, should the calculator be in radians mode if subbing in 5Pi/3?

 

[leehuan]

Theoretically speaking, you're supposed to be radians from now on unless the question asks for degrees, or gives a number with a degree sign on it.

 

[BlueGas]

Theoretically speaking, you're supposed to be radians from now on unless the question asks for degrees, or gives a number with a degree sign on it.

So should the calculator be in radians mode?

 

[leehuan]

Yes.