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avatar+172 

How many values of \(x\) with \(0^\circ \le x < 990^\circ\) satisfy \(\sin x = -0.31\)?

 May 3, 2020
 #1
avatar+111326 
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990° =   720°  +  270°  =   360°  + 360°   + 270°

 

There will be   two occurences  of this in every  360°   and  one  more between 0 and 270°

 

So....there will be 2 + 2 + 1  =   5 values of  x

 

cool cool cool

 May 3, 2020

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