Find the value of sin 45 by using the formula sin(A+B)=sinAcosB + cosA

1.	Find the value of sin 45 by using the formula sin(A+B)=sinAcosB + cosAsinB
Answer» let A=45 and B=30substitute these values in the formula sin(A+B)sin(45+30) = sin45co30+cos45sin30substituting the respective sin and cos values we getsin75 = √3+1/2√2 1/root 2

Discussion