Saturday

January 31, 2015

January 31, 2015

Posted by **Victor** on Tuesday, September 28, 2010 at 11:48pm.

- Vectors -
**Reiny**, Wednesday, September 29, 2010 at 12:18amlet the vector C = [a,b]

then using the dot product condition:

-4.8a + 6.8b = 20

or

12a - 17b = -50

slope of vector B is 6.7/9.6 or 67/96

slope of vector C is b/a

since the are perpendicualr

b/a = - 96/67

b = -96a/67

subbing back into first equation,

12a - 17(-96a/67) = -50

solving this I got

a = -1675/1218

and then back into the first ...

b = 400/203

so vector C = [-1675/1218, 400/203]

I will leave it up to you to check it out, it does work.

**Answer this Question**

**Related Questions**

physics [vectors] - The concept i get, but somehow i just can't execute this ...

Physics - You are given vectors A = 5.0i - 6.5j & B = -3.5i + 7.0j. A third ...

Physics - You are given vectors A = 5.0i - 6.5j and B = -2.5i + 7.0j. A third ...

Calculus and Vectors - THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ...

12th grade - prove that normal to plane containing 3 points whose position ...

Math - Equations of plane(check) - Consider the plane that contains points A(2,...

Math - Equations of plane(check) - Consider the plane that contains points A(2,3...

maths - Given that vector c and vector d are non zero vectors such that vector c...

Vectors - If vector a and b are unit vectors, and |a+b|= root3, determine (2a-5b...

math - given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q ...