6.23.18 Rewriting tan(x) in terms of cos(2x) and sin(2x): tan2cossin2
The tan2cossin2 command replaces tan(x) by
1−cos(2x)/sin(2x) in an expression.
-
tan2cossin2 takes one argument:
expr, an expression containing trigonometric functions.
- tan2cossin2(expr) returns
expr with anything of the form tan(x) replaced by
1−cos(2x)/sin(2x).
Example.
Input:
tan2cossin2(tan(x))
Output: