Question

MEDALS ALL AROUND! PLEASE SEE MY PROBLEM..

Answer 1

please prove that (cotx-cscx)(cosx+1)=-sinx

Answer 2

so lets do it together

Answer 3

sure

Answer 4

expand the brackets.

Answer 5

ahm.. first the (cotx-cscx)?

Answer 6

ya

Answer 7

im just being lazy
so you should get cot(x) + cot(x)cos(x) - csc(x) - csx(x)cos(x)

Answer 8

cot x (cot x -csc x)

Answer 9

ooops im wrong.

Answer 10

no expand it

Answer 11

ohh so when i expand it, i will expand it all?

Answer 12

ya

Answer 13

not just the (cotx-cscx) ?

Answer 14

nope

Answer 15

okay thank you, then what will i do next?

Answer 16

so u get this cot(x) + cot(x)cos(x) - csc(x) - csx(x)cos(x)

Answer 17

combine the like terms

Answer 18

that would be cot(x)+cot(x)cos(x)+cos(x)-csc(x)-csc(x) ??

Answer 19

u didnt expand it right

Answer 20

im sorry :( wait ill try again

Answer 21

cot2x-cos2x+cscx^2 ??