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April 19, 2014

Homework Help: maths

Posted by jon smith on Monday, January 3, 2011 at 11:14am.

The vector equations of 2 beams of light r1 and r2 in 3 dimensional spaces referred to a fixed origin 0 are
r1=2i+3j+2k+^(5i-4j+3k)
r2=5i+5j-k+u(i-3j+3k)
where ^ and u are scalar parameters
a)prove that these lines intercept at a point in space
b)Find the position vector for the point at which these beams intercept
c)Find the acute angle between the beams

please help i am struggling with this question

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