Proof of formula of tan3x = (3tanx - tan³x)/(1 - 3tan²x)

[@ChandrakalaGM-h4h]

Super🎉🎉🎉😊

[@Baapofmathematics]

Thank you 😊

[@irfanahanger-ui1hq]

Hello sir
Aap trigonometry kay saray formullah ki derivation pai video banayaay for class 10
🙏

[@Baapofmathematics]

th-cam.com/video/32BVfwexge0/w-d-xo.html