· PDF file15 cm 100 cm 30 cm Flow Figure 3 (b) A right-angled triangular weir is used to...
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· PDF file15 cm 100 cm 30 cm Flow Figure 3 (b) A right-angled triangular weir is used to measure the discharge in an open channel .1f the depth of water is 15 cm calculate the
![sms.math.nus.edu.sg...By (3), we have the relation cosA cosB cosC = 4~2 [5 2-(2R + r)]. Therefore ABC is an acute-angled triangle, a right-angled triangle, or an obtuse-angled triangle](https://img.pdfslide.us/doc/110x75/5eb289e00225fb34fd7f64c2/smsmathnusedusg-by-3-we-have-the-relation-cosa-cosb-cosc-42-5-2-2r.jpg)
