There are a few radian measures that you’ll want to memorize. They correspond to the angles you already have memorized because they’re super special. Look, I’ve summarized them in a table for you! RadiansDegrees\dfrac{\pi}{6}30°\dfrac{\pi}{4}45°\dfrac{\pi}{3}60°\dfrac{\pi}{2}90°\pi180°2\pi360° If you know those, and you’re nimble in working with them (e.g., you can figure that \dfrac{5\pi}{4} radians is 225° because…

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