(x+y)sin4530

Find the values of the following trignometric ratios: (a) cos 855^(@) , (b) sin 4530^(@) ( C) tan (-585^(@)) (d) cot((-15pi)/(4))

If theta=4530^(@) , then "sin" 4530^(@) is :

Without using tables, give the value of the following : sin4530^(@)

Find the value of following trigonometric function. sin(4530^(@))

Find the values of the following trigonometric ratio: sin 4530^0

Find the values of the following trigonometric ratio: s in4530^(0)

Prove that sin (x + y ) sin (x -y) + sin ( y+ z) sin (y - z) + sin (z+x) sin (z-x) = 0.

cos (x + y), sin (x + y), - cos (x + y) sin (xy), cos (xy), sin (xy) sin2x, 0, sin2y] | = sin2 (x + y)

sin(x+y)sin(x-y)+sin(y+z)sin(y-z)+sin(z+x)sin (z-x)=0

Prove that : (sin (x+y))/(sin (x-y) )= (sin x. cos y + cos x . Sin y)/(sin x. cos y-cos x. sin y)