Is ,sin(180-30)=sin30

1.	Is ,sin(180-30)=sin30
Answer» Friends this statement is completely true.. if we write the table of trigonometry from angle 0 to 360 as we have learnt from 0-90 so we will find its answer . You will learn that table in next standard. Hope i solved it . And also give a correct reason. Ur aks No, if we try it by changing both of them to cos. It will be like this:Sin(180-30)= Sin30Cos{90-(180-30)}= Cos (90-30)Cos{90-150}= Cos 60Cos (-60) = Cos 60Kindly note the angles are different one is negative and other is positive , negative angles don\'t exist thus the angle is not real .

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