What is the y-value for f(x) = cos(x) when x = 360°

What is the y-value for f(x) = cos(x) when x = 360°
is it 1
What is the y-value for f(x) = cos(x) when x = -90°?
is it 0
What is the y-value for f(x) = tan(90°)?

i dont get it ???can you show me how to do them

i dont get it

In this problem y = f(x).

cos(360) = 1
cos(-90) = 0

tan(90) is undefined, or is equal to infinity, because the tangent function has a vertical asymptote at that point.

Hope this helped!

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