What is 90 degrees in radians? The Unit Circle (Radian) Wall clock claims to provide easy answers to questions like this—but make sure to double check. The pop quiz wall clock made similar claims, but commenters were quick to point out that there were minor inaccuracies with the calculations and no actual calculus (despite the title). If you are wondering if everything is correct with this version, don’t look at me. I’m an art and English nerd—how the hell should I know?
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