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Start with a unit circle. Project to get x=cosθ and y=sinθ. Square & add ⇒ the radius (1) does the rest. That’s the Pythagorean identity proven, clean and visual. If this helped, like save for later and share with a friend. Follow @NoLimitMath for more visual proofs. Want help mastering trig? Book a free 20-min consult - link in bio. #mathtutor #trigonometry #stem #mathematics #mathhelp
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