Answer:
third option
Step-by-step explanation:
we will use the Greek letter [tex]\alpha[/tex] for the calculations:
cot[tex]\alpha[/tex] = [tex]\frac{cos\alpha }{sin\alpha }[/tex]
so we have:
[tex]\frac{cot\alpha}{cos\alpha} = \frac{ \frac{cos\alpha}{sin\alpha}}{cos\alpha}[/tex] =
[tex]\frac{cos\alpha}{sin\alpha * cos\alpha} = \frac{1}{sin\alpha} = Csc\alpha[/tex]
