converting r = 15, theta = 2.75 rad into rect. coord's

[tschooley]

How would I go about solving this question, I realize now that my last question, was dumb, I wasn't thinking...

Here is the question:
Convert the following coordinates to rectangle coordinates:
Polar r = 15, theta = 2.75 radians.

 

[soroban]

Hello, tschooley!

Convert the following coordinates to rectangle coordinates:
Polar r = 15, theta = 2.75 radians.

Use the conversion formulas:
\(\displaystyle \;\;x\,=\,r\cdot\cos\theta\)
\(\displaystyle \;\;y\,=\,r\cdot\sin\theta\)

 

[tschooley]

Radians

Would I have to switch the radians to degrees to do this conversion?

 

[tkhunny]

What? The cosine doesn't care. Your calculator setting may need examination.