Answers

2014-08-16T16:08:32+05:30
first make a 60 degree angle.
then make a 120 degree angle.
make a 90 degree angle from 60 degree and 120 degree.
then from 90 and 60 make the 75 degree angle.
thats all......
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2014-08-16T16:26:26+05:30
Construct 60 degrees angle 
construct 120 degrees angle 
bisect 60 and 120 degrees angles
then 90 degrees angle was formed
then bisect 90 &60 degrees angle
and the result is 75 degrees angle



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but i am not getting 75 degrees when i bisect 90 degrees and 60 degrees
just try once again u get it