Step 1 :Since \(\sin x = \sqrt{1 - \cos^2 x}\), we get \(-\sqrt{1 - \cos^2 x} = -\cos^2 x - 1\).
Step 2 :Squaring both sides, we get \(1 - \cos^2 x = \cos^4 x + 2\cos^2 x + 1\).
Step 3 :Rearranging, we get \(\cos^4 x + 2\cos^2 x - \cos^2 x + 2 = 0\), which simplifies to \(\cos^4 x + \cos^2 x + 2 = 0\).
Step 4 :This equation has no real solutions for \(\cos x\), so there are no solutions for \(x\) in the given interval.
Step 5 :Thus, the final answer is \(\boxed{\text{No Solution}}\).