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Question

85.12° in degree decimal system can be expressed in sexagesimal system as:

A
85° 7' 15''
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B
85° 7' 12''
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C
85° 8' 15''
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D
85° 8' 12''
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Solution

The correct option is B 85° 7' 12''
Here 85.12° can be expressed as
85.12°=85° +(0.12)°85.12°=85°+(0.12×60)' (since 1°=60']85.12°=85°+7.2'85.12°=85°+7'+(0.2)'85.12°=85°+7'+(0.2×60)" (since 1'=60'']85.12°=85°+7'+12"85.12°=85°7'12''
Hence 85.12°=85°7'12"
in sexagesimal system.

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