Kristina scrive: Seno e coseno 1

$\frac 12 +cos^2 \alpha +\frac{tg^2 \alpha}{2+2 tg^2\alpha}+\frac {2}{cos^2 \alpha}=$

$\frac 12 +cos^2 \alpha +\frac{sen^2 \alpha}{2cos^2 \alpha\left(1+ \frac {sen^2\alpha}{cos^2 \alpha}\right)}+\frac {2}{cos^2 \alpha}=$

$\frac 12 +cos^2 \alpha +\frac{sen^2 \alpha}{2cos^2 \alpha\left( \frac {1}{cos^2 \alpha}\right)}+\frac {2}{cos^2 \alpha}=$

$\frac 12 +cos^2 \alpha +\frac{sen^2 \alpha}{2}+\frac {2}{cos^2 \alpha}=$

$\frac 12 +\frac 12 +\frac{cos^2 \alpha}{2}+\frac {2}{cos^2 \alpha}=$

$1 +\frac{cos^2 \alpha}{2}+\frac {2}{cos^2 \alpha}$

(Questa pagina è stata visualizzata da 67 persone)

Un pensiero riguardo “Kristina scrive: Seno e coseno 1”

Matebook