Masaken
Unknown Member
Need help with part a, how would you start?
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maths help - perpendicular distance (1 Viewer)
- Thread starter Masaken
- Start date
Need help with part a, how would you start?
For 19 a):
we know
px + qy + r = 0 (eq1)
x^2 +y^2 = d^2
Notice that y is not i the equation of 19a). So to remove y make a substitution.
Make y the subject in eq1
=> y = (-r - px)/q
Now substitute.
A lot parametric equation have a similar format. Often just involving substitution.
we know
px + qy + r = 0 (eq1)
x^2 +y^2 = d^2
Notice that y is not i the equation of 19a). So to remove y make a substitution.
Make y the subject in eq1
=> y = (-r - px)/q
Now substitute.
A lot parametric equation have a similar format. Often just involving substitution.
Masaken
Unknown Member
Thank you!