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View Full Version : Trig Help - Need Help Verifying This Identity!


dec1ble
Nov16-04, 11:31 PM
im trying to verify this identity - sin x + tan x / 1 + cos x = tan x - i get lost very easily and need the steps - can anyone help me? :yuck:

StatusX
Nov16-04, 11:40 PM
multiply by cos(x)/cos(x)

dec1ble
Nov16-04, 11:46 PM
hmm - can you simplify any of it for me in steps?

StatusX
Nov17-04, 12:37 AM
\frac{sin x + tan x}{1+cos x}

\frac{(sin x + tan x)(cos x)}{(1+cos x) (cos x)}

\frac{sin x \cdot cos x + sin x}{cos x (1+cos x)}

can you take it from here?