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I need help step by step by solving this equation: sin x = -0,35 

 

in the format 30 + n*360 you know, but don't just write the answer, because I don't know how to get the r in r+n*360

 

Is it arcsin? or do I have to use the standard 30 degrees in the sinx = 30+n*360 ?

 

(If you don't understand my explanation, just try to answer the first question and explain in step by step what you are doing)

 

thanks :p

 Jul 5, 2016
 #1
avatar+33653 
0

Use arcsin(-0.35)

 

On the calculator on the home page here, first press the 2nd key, then the asin key ( asin is arcsin).

 

Remember that angles that produce negative values for sine occur in the third and fourth quadrants (I.e. Between 180 and 360 degrees).

 Jul 5, 2016
 #2
avatar+8 
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But the answer in my book says x1=  200.5+n*360, x2=339,5 + n*360, and arcsin(-0,35) is ~-20,5, and not 200,5 

 Jul 5, 2016
 #4
avatar+33653 
0

360 + (-20.5) =

 

180 - (-20.5) =

Alan  Jul 5, 2016

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