Labels:circle | graphics | sketch | clipart | art OCR: Figure 12-16: Illustration of the Range of the Hyperbolic Cosine Function The graph of coch does not look like that of cos rotated 90 degrees; instead it looks like that of cos unrotated. That is because cosh iz is not equal to i cos z; rather, cosh is = cos z. Interpreted, that means that the shading is pre-rotated but there is no post-rotation.
