Cos 3 theta/sin 3 theta?

2 Answers
Apr 26, 2018

#cot3theta#

Explanation:

Using the identity #cottheta = costheta/sintheta#, we know that #(cos3theta)/(sin3theta)# = #cot3theta#

Apr 26, 2018

#(cos 3t)/(sin 3t) = cot (3t)#

Trig books give:

#cot 3t = (3cot t - cot^3 t)/(1 - 3cot^2 t)#