This question was asked in Ex 1.1, 1

Let U be the set of traingle in a plane. If A is the set of all traingles with at least one angle different from 60degree, what is A'?

Debananda Soibam's image
Debananda Soibam
Oct. 23, 2020, 9:02 a.m.

Answer the question...

Debananda Soibam's image