Asked by grace

Graph the equation y = 1 + 2 sin x. This curve crosses the x-axis in several places. Identify all the x-intercepts with 0 < x < 360.

Answers

Answered by Steve
It crosses the x-axis whenever sinx = -1/2. That is, whenever

x = (2k-1)? + ?/6
x = 2k? - ?/6

for any integer k.

If you just wanted the graph, why not visit any of hundreds of graphing sites, such as this one:

http://www.wolframalpha.com/input/?i=1%2B2sinx
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