Question

cotx/tanx=1-sin^2x/1-cos^2x

Answer 1

need to prove left side = right side

Answer 2

what is cot x?

what is tan x?

do you know their identity?

Answer 3

its actually theta

Answer 4

theta????

you mean tan (theta) ?

Answer 5

yeah

Answer 6

it doesn't really matter...

it could be tan(elephant)
cos(monkey)
sin(SQUARE)

its the variable, you can assign it to anything

if i said sin(ANT) and ANT is 0 then sin(0) =0

do you see?

Answer 7

so do you know their identities?

Answer 8

no

Answer 9

okay,


the identities of ...

\[\tan(x)=\frac{ \sin(x) }{ \cos(x) }\]

\[\cot(x)=\frac{ 1 }{ \tan(x) }\]



and

\[\cos ^{2}(x)+\sin ^{2}(x)=1\]


so using these you should be able to work them out,


ask me if you get stuck

Answer 10

i dont know what to do after