Question

Sabendo que sen 0 =3/5 e cos 0 = -4/5, calcule o valor da cossec 0, sec 0 e cotg 0.

Answer 1

$\sin\theta=\frac35$
$\cos\theta=-\frac45$

$\csc\theta=\frac{1}{\sin\theta}=\frac{1}{\frac35}=\frac53$

$\sec\theta=\frac{1}{\cos\theta}=\frac{1}{-\frac45}=-\frac54$

$\cot\theta=\frac{\cos\theta}{\sin\theta}=\frac{-\frac45}{\frac35}=-\frac43$