Documentation

Mathematica Teacher's Edition

Built-in Functions

Algebraic Computation

Formula Manipulation

TrigToExp

TrigToExp[expr] converts trigonometric functions in expr to exponentials.

TrigToExp operates on both circular and hyperbolic functions, and their inverses.
See The Mathematica Book on the web: Section 1.4.5 and Section 3.3.7.
See also: ExpToTrig, TrigReduce, ComplexExpand.

Further Examples