(a)

(b)

(c)

(d)

where

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Use radian measure and enter your answers using at least four significant digits.
*

What observations can be made while solving the above parts?

** A. ** The sine and cosine functions intersect the lines ** B. ** The sine and cosine functions never intersect the line ** C. ** The function ** D. ** The function ** E. ** The sine and cosine functions only intersect the lines ** F. ** The sine and cosine functions intersect the line