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JAMB Mathematics 2023 Paper

Question : 75

Total: 80

^{\circ}

^{\circ}

^{\circ}

^{\circ}

\pi

= 3.142 and R = 6370 km]

Solution:

AB = $\frac{\theta}{360} \times 2\pi R\cos\propto$ (distance on small circle)

= 64 - 56 = 8 $^{\circ}$

$\propto = 86^{\circ}$

⇒ AB = $\frac{8}{360}$ x 2 x 3.142 x 6370 x cos 86

⇒ AB = $\frac{22,338.29974}{360}$

∴ AB = 62km (to the nearest km)

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