Question

(sin2x cosx-cos2x sinx)/(cos2x cosx+sin2x sinx) = tanx

Answer 1

you could apply sin(A-B) on top

Answer 2

could you please explain further? worked solution?

Answer 3

Do you know what sin(A-B) is?

Answer 4

yes

Answer 5

sinAcosB-cosAsinB

Answer 6

ok now your numerator is very similar to that

Answer 7

A=2x B=x

Answer 8

ah

Answer 9

Can you write it now?

Answer 10

yes

Answer 11

Now can you think of what to do with denominator?

Answer 12

yes :)

Answer 13

Great ! :)

Answer 14

i have done it thankyou very much :)

Answer 15

A medal for finishing it off yourself !

Answer 16

WELCOME TO OPENSTUDY !

Answer 17

lol i am new here
is this service completely free?

Answer 18

yep :)

Answer 19

oh wow. and people reply instantaneously to posts

Answer 20

Yes . People from all over the world help you with your subjects -be it Physics,Chemistry ,Math ,History or any others that you study at school.