Qualification > Math
IGCSE MATHS Doubts
PeaceMaker:
Paper 2 2005 May/june Q) 2, 6, 13, 14b, 17. I don't understand please explain and again, thanks!
Fastal:
--- Quote from: PeaceMaker on May 09, 2010, 05:59:18 am ---Paper 2 2005 May/june Q) 2, 6, 13, 14b, 17. I don't understand please explain and again, thanks!
--- End quote ---
i have a doubt in 14b tooh
astarmathsandphysics:
Will look as soon as i get up
Meticulous:
--- Quote from: PeaceMaker on May 09, 2010, 05:59:18 am ---Paper 2 2005 May/june Q) 2, 6, 13, 14b, 17. I don't understand please explain and again, thanks!
--- End quote ---
Q2: sin5=h/3.17.....h=3.17*sin5
Q6: using triangle PBQ, PB=BQ= 4 cm..now use pythagoras
Q13: Easy. Count the dots first, then get the nth term.
Q14 b: % increase= (new value-old value)/old value x 100%
Q17: it says t=no of hours after midday, so at midday t=0..substitute 0 into the equation.
Monica:
Q2) You will just use the sin rule. It is a right triangle, you have the angle, hyp and you need the opposite(h).
Sin5= opp/hyp = h/3.17
Q6) Each side of ABCD is 8 cm and each point of PQRS is the mid point of ABCD, thus PB=4 and BQ=4.
Q14) Percentage increase= Increase/ actual *100.
310 000 - 62 000 / 62 000 = 4*100 = 400%
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