prove sin(x-y)cos x -cos(x-y) sin x = - sin y
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Remember sin(A-B) = sin(A)cos(B)-cos(A)sin(B)?
You just have to apply this here.
sin(x-y)cos x -cos(x-y) sin x = sin( (x-y)-(x) )= sin (-y) = - sin(y)
Hence, its proved!
See! Its that simple! Just try to relate things with the identities you have learned.
You just have to apply this here.
sin(x-y)cos x -cos(x-y) sin x = sin( (x-y)-(x) )= sin (-y) = - sin(y)
Hence, its proved!
See! Its that simple! Just try to relate things with the identities you have learned.
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