Respuesta :

ogtori97
cos A cos B - sin A sin B
That should be your answer  Hope this helps

The expanded equivalent of cos(a – b) is  cos(a)cos(b)+sin(a)sin(b).

Given that,

  • The equation is cos(a - b).
  • We need to find the expanded equivalent of the above equation.

Based on the above information, the calculation is as follows:

= cos (a - b)

=  cos(a)cos(b)+sin(a)sin(b)

Therefore we can conclude that the expanded equivalent of cos(a – b) is  cos(a)cos(b)+sin(a)sin(b).

Learn more: brainly.com/question/12736770