Trig Identities Question (1 Viewer)

[mtsmahia]

CodeCogsEqn.gif


can someone help solve this...

i dont get what to do with tan(90-theta)


thanks

lol...i dont get how to use the LATEX thing yet...so excuse me

 

[Timothy.Siu]

sec²x-1= tan² x
tan(90-x)=cot x

therefore that= tan x

 

[mtsmahia]

sec²x-1= tan² x
tan(90-x)=cot x

therefore that= tan x

um..how did u get tan(90-x) =cot x

 

[oly1991]

um...isnt the question asking to simplify....there is no equation

yeh what tim did was simplifying

 

[oly1991]

um..how did u get tan(90-x) =cot x

its just a basic trig identity...you should look over them

 

[mtsmahia]

yeh what tim did was simplifying

yeha just realsied that....i edited my question lol

 

[Timothy.Siu]

um..how did u get tan(90-x) =cot x

yeah as the other person said, its a trig identity,

like sin(90-x)=cos x

 

[mtsmahia]

yeah as the other person said, its a trig identity,

like sin(90-x)=cos x

oh yeah...just checked out my textbook...thanks for the help...

 

[Timothy.Siu]

oh yeah...just checked out my textbook...thanks for the help...

your welcome

 

[oly1991]

oh yeah...just checked out my textbook...thanks for the help...

if you have trouble memorising them then you might want to look at the proofs of these identities and try proving them yourself.