Qualification > Math
IGCSE MATHS Doubts
bulono:
help needed M/J 2004 question 2 c.....mine is 11 00 am GMT 3+
$H00t!N& $t@r:
--- Quote from: ~VIN1094~ on May 18, 2010, 09:19:13 pm ---for b) there is a way to draw 3 equal lines i knew it .. cant remember!! we dont hav it in the portion .. and also i dont think we hav the remaining .. dont bother urself solving old paper .. ;) i can give u the answer but it'll take time .. i cant even find the book were i hav all types of geometrical rules and stuff (for engineering not fo us) im sure nothing like this will come !! know locus n stuff ..
--- End quote ---
damn ur good!!! Thanks alot, nt just fr this question but generally! as in ur genius man! hats off!!
haris94:
--- Quote from: bulono on May 18, 2010, 09:30:13 pm ---help needed M/J 2004 question 2 c.....mine is 11 00 am GMT 3+
--- End quote ---
scroll up....same page
i hv written it
Vin:
--- Quote from: ivrytwr3 on May 18, 2010, 09:16:15 pm ---Could someone take a look at 0580/03 Oct/Nov 2009 Paper 3 core
Question 4 part c. "Use trigonometry to calculate the length of BC".
I did:
7 (cos 55)
Which obvioulsy isn't right as that would mean the hym is the shortest side :(
Where have i gone wrong please?!
Thank You!
--- End quote ---
Sin x = opposite
---------
hypotenuse
tan x = opposite
----------
adjacent
cos x = adjacent
---------
hypotenuse
check this website ..
http://www.mathsisfun.com/sine-cosine-tangent.html
regarding ur sum ..
use sine
sin x = opposite
---------
hypotenuse
angle is given, name unknown as z
sin 35 = 7/z
z = 7/sin 35
z = 12.2 cm
LEARN THE TRIGONOMETRY FUNCTIONS !!!
bulono:
thank u haris94
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version