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Mathematics & Statistic Tutor Perth - SPSS Help   

Step Seven

Finding the first solution may be done on the calculator but just be wary when Sine and Tangent functions equal a negative number, the answer on the calculator will be a negative angle. Check Sin (x) = -0.5, calculator says -30, now use Sin (210) in calculator and the answer is -0.5 so this is your first answer.
 

Step Eight