CBSE Class 10 Answered
plz solve this with figure
Asked by achalgoel | 18 Feb, 2010, 10:14: PM
Expert Answer
In the lower trianlge, with hypotenuse OA, the anlge A is 180 - 90 - 30 = 60.
Hence the OAC = 180 - 30 - 60 = 90
Length of the pole = AC
sin 30 = 10/OA
OA = 20 m
AOC = 60-30 = 30
tan 30 = AC/OA
AC = OA tan 30 = 20x1/3 = 203/3 m = Length of pole.
Regards,
Team,
TopperLearning.
Answered by | 19 Feb, 2010, 06:15: AM
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