How do the graphs of sine and cosine relate to each of the others?
Tangent? Cotangent?
The graphs of sine and cosine affect secant and cosecant in almost the same way. Since we have ratios that have sinx and cosx on the bottom we take into consideration any possibilities of it being undefined. Because undefined=asymptotes. So, when we have cosine being zero (pi/2 and 3pi/2) we have asymptotes affecting the graph of secant. When sine is 0 (0 and pi) we have asymptotes for cosecant that affect its graph.
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