Evaluate each of the followingcos2 30° + cos2 45° + cos2 60° + cos2 90°

Evaluate each of the following

$\cos^{2} 30 ° + \cos^{2} 45 ° + \cos^{2} 60 ° + \cos^{2} 90 °$

Mixed-up sentence exercise

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.