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A way to prove tg(2x)=(2tg(x))/(1-tg^2x)
Author:
Ali Jradi
Topic:
Trigonometry
GeoGebra
New Resources
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Neuberg's Theorem
函數的單調性
רישום חופשי
Area Between Two Curves
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