Question

Can you check my answer to this trig id question?

Question: Prove the identity of: tan²(x)

Answer 1

Aaw man ,,, why do you make geometry complicated with grammar and composition

Answer 2

it's a three step proof from left.

Answer 3

hahaha. Sorry:), I need to explain every single step of the way. Otherwise, I lose marks. My teacher loves to know that we understand wahts going on

Answer 4

My teacher likes that we use mathematical terms and all of that. Thats why a simple answer becomes so... IDK... Fancy? LOL

Answer 5

But is that ok?

Answer 6

(1-(cos²(x)+sin²(x)))/(1+(cos²(x)-sin²(x)))
^ - here

Answer 7

what?

Answer 8

is something wrong in that line?

Answer 9

yes ... you wrote + in place of -

Answer 10

Ohh. I thought that if its 1+ at first, you need to make it - later.
So is it like this?
(1-(cos²(x)-sin²(x)))/(1+(cos²(x)-sin²(x)))

Answer 11

yes

Answer 12

Thank you for that:) I could have lost marks.

Answer 13

are there any other issues in my answer?

Answer 14

rest is all right ... just keep practicing .., until you get better.

Answer 15

Thank you experimentx, Maybe when Im 80 years old, I will be half as smart as you are now:) I have no idea how you know so much.

Answer 16

You are like a math genius:)

Answer 17

haha ... genius is not a word for me. you are smart too.

Answer 18

You kidding? Genius is the perfect word for you!

Answer 19

Anyways, Thanks again experimentx:)

Answer 20

tan^2x = ??? it's not showing up...
btw, he is a genius...

Answer 21

you are being too generous ... literally.

Answer 22

l8ers guys.... gtg

Answer 23

@dpainc, I explained at the beginning that tan² x became sin²(x) / cos²(x). because of the quotent identity

Answer 24

see ya

Answer 25

Bye:)