Find the coordinates of the point which divides the join of (–1, 7) and (4, –3) in the ratio 2 : 3.
Let P(x, y) be the required point.
Using the section formula, we obtain
\(x=\)\(\frac{2\times4+3\times(-1)}{2+3}=\frac{8-3}{5}=\frac{5}{5}=1\)
\(y=\frac{2\times(-3)+3\times 7}{2+3}=\frac{-6+21}{5}=\frac{15}{5}=3\)
Therefore, the point is (1, 3).
What is the angle between the hour and minute hands at 4:30?
Class | 0 – 15 | 15 – 30 | 30 – 45 | 45 – 60 | 60 – 75 | 75 – 90 |
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Frequency | 11 | 8 | 15 | 7 | 10 | 9 |