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3cosx+sinx=0, x=?

And how to solve it?

 Aug 14, 2016
 #1
avatar+37084 
+5

3cosx = - sinx

cosx = -1/3sinx

cosx/sinx = -1/3

sinx/cosx = -3

tanx = -3

x =arctan(-3) = -71.565 degrees = 288.435 degrees    and  108.43 degrees

 Aug 14, 2016
 #2
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Haha i really hate it when there is such an obvious way to solve the problem but i just can't see it even after trying various techniques for an hour or two lol

 

Anyways, thanks for the answer, you da real MVP :)

 Aug 14, 2016

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