Question

if
x = cota-tana then tan2a is equal to
(i)x (ii) 2x (iii) 1/x (iv) 2/x​

Answer 1

Answer:

2/x

Step-by-step explanation:

tan2a = (2tana)/(1-tan2a)

Cota-tana = 1/tana - tana = (1-tan2a)/tana