Heights and Distances Practice Test 2

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Question : 5 of 24

Marks: +1, -0

A cliff measures 80 m from the foot of it onlevel ground. The angle of elevation of thetop of the cliff is 30°. Find the height of thecliff.

${80√3}/3m$
${40√3}/3m$
$80√3m$
All of the above
None of these

Solution:

In ΔABC,

{AB}/{BC}=\tan30°

{AB}/80=1/√3

AB=80/√3×√3/√3={80√3}/3m

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