Qualification > Math

math p1 o/n 05 DOUBT

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*-*Sizzy*-*:
can any one solve 9 iii) i did the rest of the question just part iii) is a lil confusin....:S
Thanks in advance!!! ;)

nid404:
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

*-*Sizzy*-*:
thanx!!!i got it nw!!!Thanks loadz!!!  ;D

nid404:

--- Quote from: *-*Sizzy*-* on April 22, 2010, 02:59:55 pm ---thanx!!!i got it nw!!!Thanks loadz!!!  ;D

--- End quote ---

anytime

Amr Fouad:
Awesome Nid..As always

+rep.

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