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Find the angle between the following pairs of lines.(x)/2=(y)/2=(z)/1and (x-5)/4=(y-2)/1=(z-3)/8 |
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Answer» `therefore COSTHETA = (8+2+8)/(sqrt(4+4+1)sqrt(16+1+64)) = (18)/(3xx9) = 2/3 rArr theta = cos^(-) (2/3)` |
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