Question

how to construct a 75 degree angle using ruler and compass..... ​

Answer 1

you should make by proctetor

Answer 2

bisect the angles 90° and 60° using a ruler and compass, so you draw a line, take your comapss and make an arc, from the starting point, take the same angle with which you made the arc and mark a small arc on the big one, now take the same compass, unchanged and on the point where you made the small arc put the compass and mark another obtuse arc. Now bisect both the angles ( you must know how to do that ) then mark the 90° angle. Then bisect the 90° and 60° arcs to get 75°

Step-by-step explanation:

because the bisection of both angles gives 75°

you see 90° + 60° / 2 = 75°

and you are basically doing the same thing of bisecting 90° and 60°.