# Math Help - Prooving trig question

1. ## Prooving trig question

am trying to prove the this trig question but i have been unsucessful.

Tan A+ Cot A = 2Cosec 2A

2. Originally Posted by sigma1
am trying to prove the this trig question but i have been unsucessful.

Tan A+ Cot A = 2Cosec 2A
Hi sigma1,

$tanA+cotA=\frac{sinA}{cosA}+\frac{cosA}{sinA}=\fra c{sinA}{sinA}\frac{sinA}{cosA}+\frac{cosA}{cosA}\f rac{cosA}{sinA}$

$=\frac{sin^2A+cos^2A}{sinAcosA}=\frac{1}{sinAcosA} =\frac{1}{\frac{1}{2}sin2A}$

$=\frac{2}{sin2A}=2cosec2A$

3. thanks alot i almost had that one i see where i got stuck...