Home
Class 11
MATHS
Let U be the set of all triangles in a...

Let `U` be the set of all triangles in a plane. If `A` is the set of all triangles with at least one angle different from `60^@`, what is `A`?

Text Solution

Verified by Experts

U = set of all triangles
A = set of those triangles which are not equilateral
`:. A' =U - A`
= set of those triangles which are equilateral
= set of equilateral triangles.
Promotional Banner

Topper's Solved these Questions

  • SETS

    NAGEEN PRAKASHAN|Exercise Exercise 1.6|8 Videos

  • SETS

    NAGEEN PRAKASHAN|Exercise MISC Exercise|16 Videos

  • SETS

    NAGEEN PRAKASHAN|Exercise Exercise 1.4|12 Videos

  • SEQUENCE AND SERIES

    NAGEEN PRAKASHAN|Exercise Miscellaneous Exercise|32 Videos

  • STATISTICS

    NAGEEN PRAKASHAN|Exercise MISCELLANEOUS EXERCISE|7 Videos

Similar Questions

Explore conceptually related problems

The sum of all exterior angles of a triangle is

If P is the set of all parallelogram, and T is the set of all trapeziums, then PnnT is

Let Z be the set of all integers and let a*b =a-b+ab . Then * is

Let A be the set of all triangles in a plane having the sum of three interior angles is greater than 180^(@) , then A is a/an ______ set.

Let U = the set of all triangles , P = the set of all isosceles triangles, Q - the set of all equilateral triangles , R = the set of all right angled triangles. What do the sets P uu Q represents ?

Let s be the set of all functions from the set A to the set A. If n(A)=k then n(S) is

Let A be the set of all points in a plane and let O be the origin Let R={(p,q):OP=OQ}. then ,R is