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Author Topic: math p1 o/n 05 DOUBT  (Read 1058 times)

Offline *-*Sizzy*-*

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math p1 o/n 05 DOUBT
« on: April 20, 2010, 10:22:50 pm »
can any one solve 9 iii) i did the rest of the question just part iii) is a lil confusin....:S
Thanks in advance!!! ;)
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Leave the crowd, stand apart, ignore your head and follow your heart.....!

nid404

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Re: math p1 o/n 05 DOUBT
« Reply #1 on: April 21, 2010, 06:58:24 am »
Basically you find the the two tangents

for 2x+y=10
m=-2

for 12/x
dy/dx= -12/x2

m= -3

also because tan theta= m
for eq 1
theta= tan-1 (-2)
       = -63.4(negative sign is cuz of the direction) =63.4
for eq 2
theta= tan-1 (-3)
       =-71.6=71.6
angle between them would be the difference...
Draw graphically if u don't understand
    71.6-63.4=8.2 degrees
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Offline *-*Sizzy*-*

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Re: math p1 o/n 05 DOUBT
« Reply #2 on: April 22, 2010, 02:59:55 pm »
thanx!!!i got it nw!!!Thanks loadz!!!  ;D
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Leave the crowd, stand apart, ignore your head and follow your heart.....!

nid404

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Re: math p1 o/n 05 DOUBT
« Reply #3 on: April 22, 2010, 04:27:47 pm »
Quote from: *-*Sizzy*-* on April 22, 2010, 02:59:55 pm
thanx!!!i got it nw!!!Thanks loadz!!!  ;D

anytime
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Amr Fouad

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Re: math p1 o/n 05 DOUBT
« Reply #4 on: April 22, 2010, 04:48:55 pm »
Awesome Nid..As always

+rep.
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nid404

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Re: math p1 o/n 05 DOUBT
« Reply #5 on: April 22, 2010, 04:50:38 pm »
Quote from: ~ A.F ~ on April 22, 2010, 04:48:55 pm
Awesome Nid..As always

+rep.

Thank you

Thanks for the rep tho
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