From the top of a pillár of height 20 {m} the angles of elevation and depression of the top and bottom of another pillar are 30^\circ and 45^{\circ}^\circ respectively. The height of the second pillar (in metre) is:

Correct Answer is : 20√3(√3+1)m

{20}/{\\sqrt{3}(\\sqrt{3}-1) {m}

{20}/{\\sqrt{3}(\\sqrt{3}+1) {m}

CDS Model Paper 4 Mathematics

Question : 47 of 100

Marks: +1, -0

From the top of a pillár of height 20m the angles of elevation and depression of the top and bottom of another pillar are 30° and 45circ° respectively. The height of the second pillar (in metre) is:

20
√3
(√3−1)m
20
√3
(√3+1)m
20√3m
20
√3
m

Validate

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