sin(51)cos(21) - cos(51)sin(21)
Using the trigonometric identity sin(a-b) = sin(a)cos(b) - cos(a)sin(b), we can simplify the expression:
sin(51-21)sin(30)0.5
Therefore, the value of the expression is 0.5.
sin(51)cos(21) - cos(51)sin(21)
Using the trigonometric identity sin(a-b) = sin(a)cos(b) - cos(a)sin(b), we can simplify the expression:
sin(51-21)
sin(30)
0.5
Therefore, the value of the expression is 0.5.