Question

cosX/secX+tanX = 1-sinX

Please help! Proving with Identities.

Answer 1

is it \[\large\rm \frac{ cosx }{ \sec x }+ \tan x =1-\sin(x)\]
`OR`
\[\large\rm \frac{ cosx }{ \sec x +tan x } =1-\sin(x)\]

Answer 2

Oooh, sorry! I forgot the parentheses. It's the second version, with both secX and tanX in the denominator.

Answer 3

alright first i would multiply the fraction by the conjugate of the denominator
or first you can rewrite sec and tan in terms of sin, cos

Answer 4

what's the definition of sec nd tan ??

Answer 5

how would you write sec and tan in terms of sin,cos ? do you know ? if not its okay :)