Match each expression with its product-to-sum formula. (a) sin(u)cos(v) (1)/(2)[sin(u+v)+sin(u-v)] (1)/(2)[sin(u+v)-sin(u-v)] (b) cos(u)sin(v) (1)/(2)[cos(u-v)+cos(u+v)] (1)/(2)[sin(u+v)+sin(u-v)] (1)/(2)[sin(u+v)-sin(u-v)] (c) cos(u)cos(v) (1)/(2)[cos(u-v)+cos(u+v)] (1)/(2)[sin(u+v)+sin(u-v)] (1)/(2)[sin(u+v)-sin(u-v)]

Let's match each expression with its corresponding product-to-sum formula:(a) The correct formula is: (b) The correct formula is: (c) The correct formula is: So the matches are:(a) with (b) with (c) with