Oblicz tgx
: 15 lut 2009, o 09:11
Oblicz \(\displaystyle{ tgx}\),wiedząc, że \(\displaystyle{ siny = \frac{1}{\sqrt{10}}}\) i \(\displaystyle{ x+2y= \frac{\pi}{4}}\)
i \(\displaystyle{ x,y \in ( 0, \frac{\pi}{2})}\)
i \(\displaystyle{ x,y \in ( 0, \frac{\pi}{2})}\)