Question

Section C
1. Show that, tan5.x - tan3x - tan2x = tan5x tam3x tan2x.
ns:-​

Answer 1

Answer:

Step-by-step explanation:

$tan5x=tan(3x+2x)=\frac{tan3x+tan2x}{1-tan3xtan2x} \\tan5x(1-tan3xtan2x)=tan3x+tan2x\\tan5x-tan5xtan3xtan2x=tan3x+tan2x\\tan5x-tan3x+tan2x=-tan5xtan3xtan2x$

This completes the proof.