IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: Most UniQue™ on May 15, 2011, 02:21:50 pm

Title: Urgent help needed!!
Post by: Most UniQue™ on May 15, 2011, 02:21:50 pm: M/j 2010 p42

Question 5 c
Title: Re: Urgent help needed!!
Post by: hasan919 on May 15, 2011, 04:54:03 pm: u shud draw horizontal line towards the east from A. and a vertical line towards north from T. now u hv the require triangle which is right. now use trigonometry to solve for the horizontal line, cos 35 = x/180. x = 147.4. 8)
Title: Re: Urgent help needed!!
Post by: Most UniQue™ on May 15, 2011, 05:42:01 pm: Quote from: hasan919 on May 15, 2011, 04:54:03 pm
u shud draw horizontal line towards the east from A. and a vertical line towards north from T. now u hv the require triangle which is right. now use trigonometry to solve for the horizontal line, cos 35 = x/180. x = 147.4. 8)

Dude how did u get 35, dats y I get a wrong answer? Cn u do frm 5b onwards till 5c?
Thanks
Title: Re: Urgent help needed!!
Post by: SauD~ on May 15, 2011, 06:05:28 pm: Quote from: The Nerdy Pro on May 15, 2011, 05:42:01 pm
Dude how did u get 35, dats y I get a wrong answer? Cn u do frm 5b onwards till 5c?
Thanks
5bi) 150 - 25 = 125
5bii) 180 - 125 = 55

5c) 180 - 125 = 55
sin 55 = x/180
sin 55 = .81915 x180 = 147.47

hope you understand
Title: Re: Urgent help needed!!
Post by: Most UniQue™ on May 15, 2011, 06:11:57 pm: Quote from: $~SauD~$ on May 15, 2011, 06:05:28 pm
5bi) 150 - 25 = 125
5bii) 180 - 125 = 55

5c) 180 - 125 = 55
sin 55 = x/180
sin 55 = .81915 x180 = 147.47

hope you understand

Dude 5 b (ii) is wrong n how did u get 180-125( cn u mention plz)
Title: Re: Urgent help needed!!
Post by: SauD~ on May 15, 2011, 06:13:04 pm: Quote from: The Nerdy Pro on May 15, 2011, 06:11:57 pm
Dude 5 b (ii) is wrong n how did u get 180-125( cn u mention plz)
ops i am sorry
180 - 125 = 55

360 -55 = 305
Title: Re: Urgent help needed!!
Post by: Most UniQue™ on May 15, 2011, 06:17:02 pm: Quote from: $~SauD~$ on May 15, 2011, 06:13:04 pm
ops i am sorry
180 - 125 = 55

360 -55 = 305

Cn u explain or do it in paper n scan, I'll get like dat easier
Title: Re: Urgent help needed!!
Post by: SauD~ on May 15, 2011, 06:25:16 pm: Quote from: The Nerdy Pro on May 15, 2011, 06:17:02 pm
Cn u explain or do it in paper n scan, I'll get like dat easier
the whole thing?
Title: Re: Urgent help needed!!
Post by: Most UniQue™ on May 15, 2011, 06:38:02 pm: Quote from: $~SauD~$ on May 15, 2011, 06:25:16 pm
the whole thing?
Frm 5b till 5c Thanks
Title: Re: Urgent help needed!!
Post by: leebux101 on May 15, 2011, 06:54:30 pm: what paper is this? and which board? and which subject?
Title: Re: Urgent help needed!!
Post by: SauD~ on May 15, 2011, 07:01:37 pm: Quote from: leebux101 on May 15, 2011, 06:54:30 pm
what paper is this? and which board? and which subject?
LOL...
2010 may/june
IGCSE
MATHS

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