Mathematics

Problem

From a point on the ground, the angle of elevation of a balloon is

30^{\circ}

. After the balloon rises vertically by

100\,\text{m}

, the new angle of elevation becomes

60^{\circ}

. Assuming no horizontal drift, determine the height of the balloon above the ground at the first observation. a)

100\,\text{m}

50\,\text{m}

25\,\text{m}

150\,\text{m}