Question

4) Reprezentati pe CT ​

Answer 1

Explicație pas cu pas:

4)

$\sin(180) = 0 \\ \cos(180) = - 1 \\ \tg(180) = \frac{\sin(180)}{\sin(180)} = 0\\ \ctg(180) \: nedefinit$

$\sin(300) = \sin(360 - 60) = \sin(- 60) = - \sin(60) \\ = > \sin(300) = - \frac{ \sqrt{3} }{2}$

$\cos(300) = \cos(360 - 60) = \cos( - 60) = \cos(60) \\ = > \cos(300) = \frac{1}{2}$

$\tg(300) = \frac{\sin(300)}{\sin(300)} = \frac{ - \frac{ \sqrt{3} }{2} }{ \frac{1}{2} } = - \sqrt{3}$

$\ctg(300) = \frac{1}{\tg(300)} = \frac{1}{ - \sqrt{3} } = - \frac{ \sqrt{3} }{3}$