Question on: JAMB Mathematics - 1993

From the figure, calculate TH in centimeters
A
\(\frac{5}{\sqrt{3} + 1}\)
B
\(\frac{5}{\sqrt{3} - 1}\)
C
\(\frac{5}{\sqrt{3}}\)
D
\(\frac{\sqrt{3}}{5}\)
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Correct Option: B

TH = tan 45o, TH = QH

(\frac{TH}{5 + QH}) = tan 30o

TH = (b + QH) tan 30o

QH = 56 (5 + QH) (\frac{1}{\sqrt{3}})

QH(1 - (\frac{1}{\sqrt{3}})) = (\frac{5}{\sqrt{3}})

QH = (\frac{5\sqrt{3}}{\sqrt{3}} - \frac{1}{\sqrt{3}})

= (\frac{5}{\sqrt{3} - 1})

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