A delayed full-wave rectified sinusoidal current has an average value equal to half its maximum value. Find the delay angle θ.

• A. \(\theta = {\cos ^{ - 1}}\left( {\frac{\pi }{2} - \frac{1}{2}} \right)\;\;\)
• B. \(\theta = {\cos ^{ - 1}}\left( {\frac{\pi }{2} + 1} \right)\)
• C. \(\theta = {\cos ^{ - 1}}\left( {\frac{\pi }{2} - 1} \right)\)
• D. \(\theta = {\cos ^{ - 1}}\left( {\frac{\pi }{2}} \right)\)