Finding the composition of inverses when not in the range

The video tutorial explains how to find the cosine of 7π/2 by using the unit circle and identifying the x-coordinate. It then discusses finding the inverse cosine of 0 and highlights the importance of considering the range of the cosine function. The tutorial concludes by identifying the correct angle within the range where cosine equals zero.

Can you identify another angle between 0 and π that has a cosine value of zero?

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What is the final answer for the inverse cosine of 0?

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