Simplify: sin(x - π) (NOTE: The angle is "x - pi".?

Question

Simplify: sin(x - π) (NOTE: The angle is "x - pi".

Answer 1

You can use this formula: sin(a - b) = (sin a)(cos b) - (cos a)(sin b)



sin(x - π)

= (sin x)(cos π) - (cos x)(sin π)

= (sin x)(-1) - (cos x)(0)

= -(sin x)

Answer 2

sin (x - pi) = sin x cos pi - cos x sin pi



cos pi = -1

sin pi = 0



sub to give: -sin x



sin (x - pi) = -sin x

Answer 3

sin(x - π)= - sin(π - x)= - sinx

Answer 4

=-sin x

God bless you.