Prove that tan20° tan40° tan80° = $\sqrt{3}$

সমাধানঃ Prove that, tan20° tan40° tan80° = $\sqrt{3}$ L.H.S: $\tan 20°tan40°tan80°$ = $\frac{\sin 20°sin40°sin80°}{\cos 20°cos40°cos80°}$ = $\frac{2\sin 20°sin40°sin80°}{2\cos 20°cos40°cos80°}$ = …

Read more