I really need help with this problem.

sin2X+sin4X tan3X

__________ + _____ =0

sin2X-sin4X tanX

they are 2 fractions added together. It all equals 0. PLEASE help!

the 2X and 4X are not exponents they are identites, for trig functions. Thanks!

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- Apr 4th 2012, 03:18 PMomgilymcrTrigonometry Identities Proof
I really need help with this problem.

sin2X+sin4X tan3X

__________ + _____ =0

sin2X-sin4X tanX

they are 2 fractions added together. It all equals 0. PLEASE help!

the 2X and 4X are not exponents they are identites, for trig functions. Thanks! - Apr 4th 2012, 08:11 PMSorobanRe: Trigonometry Identities Proof
Hello, omgilymcr!

We will need these identities:

. .

. .

. .

. .

Quote:

The first fraction is: .

. . . . . . . . . .

The second fraction is: .

. . . . . . . . . .

. . . . . . . . . .

. . . . . . . . . .

. . . . . . . . . .

We see that [2] is the negative of [1].

Therefore, their sum is zero.

Edit: corrected typo.

. - Apr 5th 2012, 02:03 AMProve ItRe: Trigonometry Identities Proof