just encountered this question and kinda confused at how to solve it since I havn't bin told and havn't worked it out for myself. hope you can help.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

Use the graphs (shows 2 graphs) to find the values of x in the range [tex]0 /leq x /leq 720[/tex] when 2sinx = cosx -1

2. Relevant equations

3. The attempt at a solution

I found from the graph that x could equal 0, 360, and 720. but the 2 lines cross at another point before x=360 so there should be 2 more values of x to satisfy the question.

however, i can't easily read off an accurate result. i am only 16 so do you rekon they allow for error reading off the graph instead of working it out a very accurate way?

thnx

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# Homework Help: Trigonometric graph question

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