Question
Draw a frequency polygon for the following grouped frequency distribution table.
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Answer
First, draw a frequency table.
The representation into a frequency polygon will be as such.
The representation into a frequency polygon will be as such.
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Solve for $x$ and $y$:
$\frac{\text{x}}{\text{a}}+\frac{\text{y}}{\text{b}}=\frac{\text{a}+\text{b}}{\text{b}}$
$\frac{\text{x}}{\text{a}^2}+\frac{\text{y}}{\text{b}^2}=2$
→$\frac{\text{x}}{\text{a}}+\frac{\text{y}}{\text{b}}=\frac{\text{a}+\text{b}}{\text{b}}$
$\frac{\text{x}}{\text{a}^2}+\frac{\text{y}}{\text{b}^2}=2$
The angle of elevation of the top of a tower from a point on the same level as the foot of the tower is 30°. On advancing 150m towards the foot of the tower, the angle of elevation becomes 60° Show that the height of the tower is 129.9 metres. $\big[\text{Given}\sqrt{3}=1.732\big]$
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