Question

What's the sum or difference identity for cosx*sinx.

Answer 1

i.e., product-to-sum....

Answer 2

cosx*sinx=0.5*(sin(x+x)-sin(x-x))=0.5sin2x

Answer 3

so cosa*sinb=0.5[sin(a+b)-sin(a-b)) ??

Answer 4

uh or ] you know

Answer 5

correct

Answer 6

so cosa*sinb=0.5[sin(a+b)-sin(a-b)) ??