Qualification > Math
IGCSE MATHS DOUBTS HERE !!!!
Most UniQue™:
Bearings:
A,B,C,D are the four corners of a rectangular plot marked out on level ground.Given that the bearing of B from A is 090*, calculate the bearing of:
a) B from C
b) A from C
c) D from C
Plz explain it so that I cn get it Thanks
astarmathsandphysics:
I will put up a diagram now.
Most UniQue™:
--- Quote from: astarmathsandphysics on January 20, 2011, 10:34:36 am ---I will put up a diagram now.
--- End quote ---
ok Thanks ill be waiting
astarmathsandphysics:
here
SauD~:
--- Quote from: Amii on January 20, 2011, 09:10:32 am ---
9^1/2 x 3^5/2
9^1/2 = Square root of 9 = 3 which is same as 3^1
so 3^1 X 3^5/2
1/1 + 5/2 = 3.5
1x2 + 5x1 = 2 + 5 = 7 = 3.5
---- ---- ----- --
1x2 2x1 2 2
3^3.5 or 3^7/2
3^2/3 x 3^-1/6
2/3 -1/6 = 3/6
2x2 - 1x1 = 4-1 = 3
---- ---- ---- --
3x2 6x1 6 6
so 3^3/6
(3^7/2 ) / (3^3/6)
(7/2) - (3/6) = 3
7x3 - 3x1 = 21-3 = 18 = 3
--- --- ----- ---
2x3 6x1 6 6
so 3^3 = 27
Okay saud? :D
--- End quote ---
ANNIE THANKS A LOT :D but i have got a easier method by using my brain
:P :P
9^1/2 = ,/9 = 3 ,/ --- > square root sign :-[
then all are 3
so we can add same number when multiply and subtract when divide so:
3^(1 + 5/2) - (2/3 + (-1/6)) so the answer comes 3^3 = 27 ;) :D
BUT I REALLY APPRECIATE YOUR HELP, ANNIE
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version