Arjun Gupta sir (Meritnation expert),  Sir, you provided a solution to one of my question before 10 minutes. But, I am unable to understand, that how "sin 30" = 1/2. But, I am able to understand the other things and answer other than ... how sin 30 = 1/2. I also know that N/m2  ​ = Pascal. ​

Dear Student,

These are the standard trigonometric values.That you have to learn.


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