Question

is (1-tan^2x/2tanx)=1/tan2x an identity?

Answer 1

2=1

Answer 2

beni he is asking something else.

Answer 3

i'm a girl...

Answer 4

sorry lupe.btw Use the tangent angle addition identity:

Answer 5

umm......okay

Answer 6

Uh...the 2tanx is under (1-tan^2x) or just under tan^2x?

Answer 7

the 2tanx is under (1-tan^2x)

Answer 8

k

Answer 9

yes

Answer 10

thanks

Answer 11

You can try tan pi/4 = 1 -> 0=1 so not an identity.

Answer 12

thank you to

Answer 13

ur welcome.