Question

verify equation identity
(1-cot^2)/(1+cot^2)+1=2 sin^2

Answer 1

I try solving it and it was not an identity but I am not sure I am right.

Answer 2

yeah i I did that but at the end of it I did not get the 2sin^2

Answer 3

yes

Answer 4

At the end use property sin^2 + cos^2 = 1

Answer 5

at denominator

Answer 6

yeah that would give me 1/sin^2

Answer 7

Please check it

Answer 8

wait would my denominator be (sin^2+cos^2)/ sin^2?

Answer 9

similarly at denominatior , so sin^2 get cancel from both numerator & denominator ..

Answer 10

oh wow. so there would only be left -cos^2 right

Answer 11

Okay
?

Answer 12

yeah i understand that

Answer 13

what would be the next step ?

Answer 14

lcd

Answer 15

Are you there ?

Answer 16

use the denominator equal one

Answer 17

So what do you get ?

Answer 18

at the top part do you multiply the a times y?

Answer 19

in our step x = (sin^2 - cos^ ) & y = sin^2 + cos^2 & a = 1

Answer 20

yes so it would be sin^2-cos^2+(sin^2-cos^2) all divided by sin^2+cos^2?

Answer 21

okay I understood it never mine. Thank you so much for your help. I did get 2sin^2 at the end.

Answer 22

You are welcome :)