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OpenStudy (anonymous):
The figure shows a rectangle block with dimensions 6cm X 8cm X 15cm. (a) Find the legnth of DF and express the answer in surd form. [5√13] (b) Hence find the angle between (i) the lines DF and FH; (ii) the lines DF and EF.
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OpenStudy (anonymous):
|dw:1367668051305:dw|
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