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

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

This Question has been answered. 

Please Login or Register to See The Answer