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| A math problem; That made meh shit bricks :( | |
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| Tweet Topic Started: Feb 9 2009, 02:26 AM (513 Views) | |
| Xiphirx | Feb 9 2009, 02:26 AM Post #1 |
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Evil
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I've been trying to solve this Trig Identity for 2 hours (and counting)... I am very good at these types of problems but this problem is just that one that the textbook authors put it to make you shit bricks. Anywho, (sinx - cosx + 1) / (sinx + cosx -1) = (sinx + 1) / (cosx) This IS true, I checked on my graphing calculator. Any help? |
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ARSE | For The Swarm ᶘ ᵒᴥᵒᶅoo( ♪♫ ) | |
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| nataku92 | Feb 9 2009, 02:44 AM Post #2 |
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Administrator
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[(sinx - cosx + 1) / (sinx + cosx - 1)] * [(sinx + cosx + 1)/(sinx + cosx + 1)] = [sin^2 x - cos^2 x + sinx + cosx + sinx - cosx + 1]/[(sinx+cosx)^2 - 1] = [sin^2 x - cos^2 x + 2sinx + sin^2 x + 1]/[sin^2 x + 2sinxcosx + cos^2 x - 1] = [sin^2 x - (1 - sin^2x) + 2sinx + sin^2 x + 1]/[2sinxcosx] = [2sin^2 x + 2sinx]/[2sinxcosx] = [sinx + 1]/[cosx] I only used sin^2 x + cos^2 x = 1, so it's probably cleaner and easier if you used other identities. |
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| Xiphirx | Feb 9 2009, 03:27 PM Post #3 |
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Evil
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Huh, that never crossed my mind ![]() Thank you <3 |
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ARSE | For The Swarm ᶘ ᵒᴥᵒᶅoo( ♪♫ ) | |
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| PiStOlS | Feb 9 2009, 05:53 PM Post #4 |
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AoD ftw?
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You guys are smart ass muthrfuckas.... I couldn't have even tried to solve that... Wow... |
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| Xiphirx | Feb 9 2009, 05:54 PM Post #5 |
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Evil
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It really isn't as hard as it looks. Just wait until you take Honors Pre Calculus |
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ARSE | For The Swarm ᶘ ᵒᴥᵒᶅoo( ♪♫ ) | |
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| PiStOlS | Feb 9 2009, 06:10 PM Post #6 |
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AoD ftw?
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Im going into 9th grade and I'm taking 10th grade Geometry =] |
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| FoShizzle17 | Feb 9 2009, 06:20 PM Post #7 |
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[TF2PSP dev]
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I'm in accelerated algebra 2 now so I'm not familiar with those kind of problems lol |
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TF2PSP -- Team Fortress 2 mod for CSPSP (Work in progress) SkyPlatforms -- a platform sniping map in the clouds
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| MiLkY JoE | Feb 9 2009, 06:55 PM Post #8 |
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[XE]* Member
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Asians and their math honors.
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![]() * Rumors have been spreading around that you've been reading this sentence for some time now * | |
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| deAfF | Feb 9 2009, 07:09 PM Post #9 |
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[bAz] Leader
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Yeah I'm in that, you taking AP Calculus next year? |
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| Spartan | Feb 9 2009, 07:12 PM Post #10 |
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Boderator
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Yay, me too, im in Precalc Hon, and going into AP Calc next year! Hey deAfF/Xiph, You guys done half angles yet? THe formulas are a bitch for those... |
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| Xiphirx | Feb 9 2009, 07:14 PM Post #11 |
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Evil
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Nah
Probably Calculus only... AP would like kill me ![]()
Ask DubleFawk about the crazy Chinese math guy > . > |
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ARSE | For The Swarm ᶘ ᵒᴥᵒᶅoo( ♪♫ ) | |
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| deAfF | Feb 9 2009, 08:34 PM Post #12 |
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[bAz] Leader
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Yeah no didn't do those yet
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| Doublehawk | Feb 9 2009, 10:14 PM Post #13 |
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Advanced Member
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:lol: Dead crazy chinese math guys FTW! I shouldve screened that convo, that was ownage.. |
| My signature? Tis a silly thing to read. | |
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| xXxSpectre@ | Feb 9 2009, 11:08 PM Post #14 |
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Moderator
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Well Nataku, strangely, has answered your problem so I'll close this topic. |
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