Solve triangel ABC where <B=27 degree, b=7cm and a=12cm

The question asks to solve for triangle ABC, meaning you have to solve for all sides and angles. You haven't completely solved for any of the sides or angles. You solved for sinA, not A. How can you "remove" the sin to isolate A?

Also, 180-27 is the sum of the other 2 angles A and C, not just angle A. So not correct.
 
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