Answer:
[tex]\displaystyle csc\:90°, sin\:90°[/tex]
Explanation:
You need to know the Unit Circle in order to figure this out.
Extended Information on Trigonometric Identities
[tex]\displaystyle \frac{y}{r} = sin\:θ[/tex]
[tex]\displaystyle \frac{x}{r} = cos\:θ[/tex]
[tex]\displaystyle \frac{y}{x} = tan\:θ[/tex]
[tex]\displaystyle \frac{r}{x} = sec\:θ[/tex]
[tex]\displaystyle \frac{r}{y} = csc\:θ[/tex]
[tex]\displaystyle \frac{x}{y} = cot\:θ[/tex]
Where r is the length of the radius
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