TRIGO
Tama ba toh?
Plz check
Hahaha :))
1. 2cos squaredx tanx-tanx=0
tan(2cos squaredx-1)=0
tanx=0
x=o
x=(0,180)
2cos squaredx-1=0
2cos squared x over 2 (cancel yung2) = 1 over 2
square root of cos squared x= square root of 1 half=
square root of 1 over square root of 2 times square root of 2 over square root of 2
=square root of 2 over 2
cos x= plus minus square root of 2 over 2
x=45
x=(45, 135, 225,315)
2. 2cos squaredx -cosx-1=0
(2cosx+1)(cos x-1)=0
2cos x+1=0
2cos x = -1
cos x= -1 half
x= (120,240)
cosx-1
cosx=1
x=(0,360)
3. tan squared x + tanx -2=0
tanx+2=0
tanx= -2
x=(-63.43)
tan x -1 =0
tanx=o
x=45
UNDEFINED.
NO POSSIBLE VALUE OF TAN -2
yan turo sa akin :)
Kau na bahala sa checking ah?
:))
6 comments:
Please leave a comment.
Correct me if i'm wrong.
Ayt?
Haha :))
YO. Hahaha! I dropped by (obviously.)to say THANKS a lot. Hehehe! I posted an entry at zir-000ec to thank you and bea but then I just feel like leaving a comment PERSONALLY. Niahaha! Hey, if you can still read this now, just have to say that you forgot the checking.
I mean, (english kasi eh. nosebleed. Hahaha!)ayos lang na hindi mo yun ipost pero baka hindi mo nalagay sa notebook mo. Hoho. Hindi ko rin pala sure kung kailangan nga nun.
Sorry nga pala kung hindi na ko nakapag reply kanina. Niahaha! I fell asleep eh. Sorry.
HEY again!!! GOSHES. Your answer in number three is wrong. That's what I think. Kasi nung chineck ko, 1 = 0. Hindi sila compatible.
But I got an answer. Di ko sinasabing tama pero nung chineck ko kasi, 0 = 0 eh. Here's what I did:
1. Transpose -2
2. Add tan(squared)X and tanX
3. Like, 2tan(squared)X = 2
4. Divide both sides by 2
5. tan(squared)X = positive negative square root of 1.
6. rationalize both sides or whatever you wanna call it. Basta ung lalagyan ng radical sign yung dalawang sides.
7. Cancel the "(squared)"
8. tanX = positive negative 1.
9. X= 45, 135, 225, 315
10. Pag chineck, ox naman . Hahaha!
Oh no. I checked it again. Hindi pala positive negative 1. positive 1 lang pala yun. Pag kasi may negative: -1 = 0. Pero pag positive, 0 = 0.
Yun. Haha! 15 minutes to midnight. Hahaha!
Thank you Riz! :))
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