Question

If tan A=4, then tan 2 A=​

Answer 1

Answer:tan2A = -8/15

Step-by-step explanation:

tan2A = (2tanA)/[1-{tan(A)}^2]

tan2A = (2*4)/[1 - (4)^2]

tan2A = 8/(1-16)

tan2A = 8/(-15)

tan2A = -8/15