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How would you solve sin x = -1/2?

 May 12, 2016
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How would you solve sin x = -1/2?

 

Well it will have to be in the 3rd of 4th quad

 

From the triangle I can see the base angle is 30 degrees

 

So the answer is    180-30=50   and   180+30=210

 

Answers:

 \(150+2n\;\;degrees \qquad or \qquad 210+2n\;\;degrees\\ \mbox{Where n is an integer.}\)

 

 May 12, 2016

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