Question

determine o valor de cossec 315°

Answer 1

$cossec315^o=\frac{1}{sen315^o}=\frac{1}{-\frac{\sqrt2}{2}}=-\frac{2}{\sqrt2}=-\frac{2\sqrt2}{2}=-\sqrt2$

Answer 2

$cossec315 = \frac{1}{sen315} = -1,41 ou - \sqrt{2}$ :.