solved how to find the value of sin(75)?

Question: how to find the value of sin(75)? Solution : We shall write 750=450+300 And apply Sin(A+B)  formula Sin(A+B) =Sin(A)Cos(B)+Cos(A)Sin(A) Therefore Sin(750) = Sin(450+300) =Sin(450)Cos(300)+Cos(450)Sin(300)  Now we shall substitute following values into above formulas Sin(450) =1/√2 , Cos(300) = √3/2…

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