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sarvesh

· started a discussion

· 1 Months ago

Hexagon (Question: 259914.0 )

how come CA is a and DA is 2a

Question:

ABCDEF is a regular polygon. Two poles at C and D are standing vertically and subtend angles of elevation 30º and 60º at A respectively. What is the ratio of the height of the pole at C to that of the pole at D?

Options:
A)

1 : 1

B)

2 3    : 1

C)

3 3   : 1

D)

1 : 2 3   

Solution:

Ans: (d)

  

Rahul

· commented

· 1 Months ago

DA is the longest diagonal of regular polygon with 6 sides i.e hexagon is twice of circumradius and CA is smallest diagonal which can be find out from right angle triangle i.e root3 a
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