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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Help Me ! » Trigonemery Identities » 2008-11-18 03:04:45

Thanks for the help ricky. I solved the first one using your advice but if anyone has any answers about the other that would help greatly...

#2 Re: Help Me ! » Trigonemery Identities » 2008-11-17 16:14:24

Some other problems that im having trouble on are....

sec4 x - tan4 x = 1 + 2tan2x
     ^         ^                    ^

tan x sin2x = 2 - 2cos2 x
                               ^

csc x sin 2x - sec x = cos 2x sec x

2cos2 x/2 tan x = tan x + sin x
      ^             

tan 4x = (2tan 2x)/(2 - sec2 2x)
                                      ^

(^) Same as before...Denotes a power...

Any help would be appreciated...I have no idea what i am doing here...

#3 Help Me ! » Trigonemery Identities » 2008-11-17 16:01:45

Breal607
Replies: 8

The problem is.....

cos4 x sin3 x = (cos4 x - cos6 x)sinx
     ^       ^             ^          ^       

(^) means to rise the nuber as a power...

i just cant seem to find where to start this problem at????

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