Question 200357:  Hi all, im not sure whether this is really a proper question. But I need to know if there is a correct manaula method with full working to do the following. I normally do them on calculator but want to know if I should be showing working. 
For the following: Find all angles between 0 and 360 which satisfy's the equations sin theta = 0.5 
I have several otehr along the same lines an just wanna make sure im not doing them incorrectly. 
Thanks, -Nick. 
 Answer by RAY100(1637)      (Show Source): 
You can  put this solution on YOUR website! sin theta  = .500 
. 
arc sin  theta = 30 degrees 
. 
check  sin  30  = .500,,,,,,ok 
. 
Now  there  is  another  answer,,,,,,working  off  the  ref  line  at  180 deg 
. 
180-30 =150 deg 
. 
check  sin 150 = .500,,,,,ok 
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