question regarding derivatives of arc function

• Mar 20th 2010, 05:39 PM
Solid8Snake
question regarding derivatives of arc function
By using the derivative investigate the function f(x)=arccos(sinx) , give its piece-wise formula for 0≤ x ≤ 2pi.

Can someone help me with this question? I don't recall ever working arc so if anyone can help me that would be greatly appreciated.
• Mar 21st 2010, 02:30 AM
mr fantastic
Quote:

Originally Posted by Solid8Snake
By using the derivative investigate the function f(x)=arccos(sinx) , give its piece-wise formula for 0≤ x ≤ 2pi.

Can someone help me with this question? I don't recall ever working arc so if anyone can help me that would be greatly appreciated.

$\arccos (\sin x)$ means the same thing as $\cos^{-1} (\sin x)$.