1. ) In order to solve please useEuler's formula to show that the product of e^(i) E^(i) can be used to derive the trignomentric identitities.

A. (cos )(cos ) - (sin ) (sin ) = cos( + )

B (sin )(cos ) - (cos )(sin ) =sin( + )

2.) Find the values of and so that the function f(x) is continuous 0

- sin x 0