Question

Чему равняется: sin/cos cos/sin tg/sin sin/tg итдподскажите плз

Answer 1

$\displaystyle \frac{sin \alpha}{cos \alpha}= tg \alpha$

$\displaystyle \frac{cos \alpha}{sin \alpha}=ctg \alpha$

$\displaystyle \frac{tg \alpha}{sin \alpha}= \frac {sin \alpha}{cos \alpha} \cdot \frac {1}{sin \alpha}= \frac {1}{cos \alpha}$

$\displaystyle \frac {sin \alpha}{tg \alpha}= sin \alpha \cdot \frac {cos \alpha}{sin \alpha}= cos \alpha$