Answers

2016-02-03T19:28:04+05:30
First make 60 degree angle bisect it

it will become 30 degree bisect it again

 u will get 15 degree
bisect it again

u will get 7.5 degree

hope it helped

sorry I could not make a video
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2016-02-03T19:28:45+05:30
Construct an angle of 15 digree then half the angle it will be 7.5 digree .
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