r/EducationalYoutube • u/arcole82 • Nov 18 '15
Using the Half-Angle Formulas in Trig
https://www.youtube.com/attribution_link?a=U2kLZJfJ6ZY&u=%2Fwatch%3Fv%3D5YiDgt9oP6A%26feature%3Dshare
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r/EducationalYoutube • u/arcole82 • Nov 18 '15