Use cofunction identities and trig identities to find the indicated trig functions

The video tutorial explains how to solve a trigonometric problem involving the cosine of 60 degrees and the sine of 30 degrees. It introduces the concept of cofunction identities, which state that the cosine of 90 degrees minus an angle is equal to the sine of that angle. The tutorial demonstrates how to apply these identities to find that the cosine of 60 degrees is equal to the sine of 30 degrees, providing a clear method for evaluating trigonometric functions.

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