Rewrite sin ( x − π 4 ) in terms of sin ( x ) and cos ( x )

Answer 1

sin ( x − π 4 ) in terms of sin ( x ) and cos ( x)

Sin(x - y) = SinXCosY - CosXSinY

Sin(x-∏/4) = SinXCos∏/4 -CosXSin∏

= 0.707SinX -.707CosX

=0.707(SinX - CosX)