(Solved): The formula D=24[1cos1(tanitan)] can be used bo approximate the number of hours of day ...

The formula $D=24\left[1-\frac{{\cos }^{-1}(\tan i\tan \theta )}{\pi }\right]$ can be used bo approximate the number of hours of daylight when the decination of the sun is $i^{\ast }$ at a location ${\theta }^{\ast }$ north latitude. To use the formula, ${\cos }^{-1}(\tan i\tan \theta )$ must be expressed in radians (a) The number of hours of daybight on the summer scistce is hours (Do not round untl the final answer. Then round to pie nearest hundredth as needed)