Revision as of 00:29, 20 April 2025 by Bot (Created page with "<div class="d-none"><math> \newcommand{\mathds}{\mathbb}</math></div>Work out the trigonometry formulae <math display="block"> \sin(2t)=2\sin t\cos t\quad,\quad \cos(2t)=2\cos^2t-1 </math> by using elementary methods, coming from plane geometry.")
BBot
Apr 20'25
Exercise
[math]
\newcommand{\mathds}{\mathbb}[/math]
Work out the trigonometry formulae
[[math]]
\sin(2t)=2\sin t\cos t\quad,\quad
\cos(2t)=2\cos^2t-1
[[/math]]
by using elementary methods, coming from plane geometry.