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# vectors Watch

1. Find the component of a perpendicular to b.

How would I do this.
2. (Original post by plmqaz)
Find the component of a perpendicular to b.

How would I do this.
Find a vector perpendicular to b, namely c. Write a=k1b+k2c and solve for k1, k2
3. (Original post by nkvuong)
Find a vector perpendicular to b, namely c. Write a=k1b+k2c and solve for k1, k2
Thanks, but what does k mean.
4. (Original post by plmqaz)
Thanks, but what does k mean.
k here means arbitrary constants. Try for a specific pair of a, b and you'll see

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