b) An electric pole BC is 12m high. A steel wire tied to the top of the pole is
affixed to a point A on the ground to keep the pole upright The steel wire
makes an angle of 30° with the horizontal through the foot of the pole
Using trigonometrical ratios
Find (the length of the steel wire AC
(ii) distance AB
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Answer:
Let AB=10= Height of Pole
and AD be the length of the wire
From △ABD
sin45
o
=
AD
AB
⇒
2
1
=
AD
10
⇒AD=10
2
⇒10×1.414 (Take
2
=1.414)
=14.14 m
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