Question

Which of the following are solutions to the equation tan2(2x) - 1 = 0? More than 1 answer

A. pi/2
B. 3pi/8
C. pi/4
D. -pi/8

Answer 1

is that tan^2(2x) or tan2(2x) ???

Answer 2

tan^2

Answer 3

tan^2(2x)=1
tan2x =plus or minus 1

Answer 4

s=plus or - pi/8

Answer 5

D is definitely one

Answer 6

*x

Answer 7

B also..

Answer 8

I thought a was one too? I'm probably wrong

Answer 9

nope

Answer 10

just plug those values in.. you'll either get 1 or -1 but since it is tan^2, it will be positive.

Answer 11

no wait a. cant be one of the answers.. @AravindG @dpaInc

Answer 12

cant be

Answer 13

tan 180=0

Answer 14

@dpaInc do you think its only B & D?

Answer 15

yep... B,D

Answer 16

yep i me too

Answer 17

thanks :)