Discovering Planets On October 23, 1996, astronomers announced that they had discovered a...

Discovering Planets On October 23, 1996, astronomers announced that they had discovered a planet orbiting the star 16 Cygni B (Sky and Telescope, January 1997). They did not see the planet itself. Rather, for eight years they detected the periodic wobbling motion toward and away from earth that the planet induced in the star as it orbited the star. See the accompanying figure.

a. Estimate the period of the function shown in the figure.

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b. Which trigonometric function has a graph similar to the graph in the figure?