Home
Class 11
MATHS
In an equilateral triangle r:R:r1 is...

In an equilateral triangle `r:R:r_1` is

A

`1:1:1`

B

`1:sqrt(2):3`

C

`1:2:3`

D

`2:sqrt(3):sqrt(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-II) (More than one correct answer Type Questions)|5 Videos
  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-II) (Linked Comprehension Type Questions)|9 Videos
  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-III) (LEVEL-I) (Straight Objective Type Questions)|42 Videos
  • PLANES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|30 Videos
  • PROPERTIES OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISES|55 Videos

Similar Questions

Explore conceptually related problems

What is the value of r/R in an equilateral triangle .

In an equilateral triangle , find ( r ) /( R )

Knowledge Check

  • A: In a Delta ABC, r_1 r_2 r_3 =s^2 R: In an equilateral triangle , r:R:r_1=1:4:5

    A
    A is true, R is true and R is correct explanation of A
    B
    A is true, R is true and R is not correct explanation of A
    C
    A is true, R is false
    D
    A is false, R is true
  • If the length of side of an equilateral triangle is 10cm , then R =

    A
    ` ( 10 )/(sqrt3) `
    B
    ` 10 sqrt3`
    C
    ` 10 + sqrt3`
    D
    ` ( 20 )/(sqrt3) `
  • ABC is an equilateral triangle of side 4cm. If R,r, and h are the circumradius, inradius, and altitude, respectively, then (R+r)/(h) is equal to

    A
    4
    B
    2
    C
    1
    D
    3
  • Similar Questions

    Explore conceptually related problems

    In an equilateral triangle, find the value of (r )/( R) .

    Delta^("le") ABC is equilateral triangle of side a.P lies on BA such that A is mid point of PB. If r_(1) is inradius of Delta^("le") PAC" and " r_(2) is ex radius of Delta^("le") PBC opposite to P then r_(1) r_(2) =

    I: In a Delta ABC if r_1=r_2=r_3 then the triangle is a right angled triangle. II: In a Delta ABC, if rr_1=r_2r_3 then the triangle is an equilateral triangle

    In an acute angle triangle ABC r+r_(1)=r_(2)+r_(3) and angleB gt (pi)/(3) then

    Assertion (A) : The angle between equal sides of an isosceles triangles is 60 ^(@) then r: R= 1: 2 Reason (R ) : Every isosceles triangles is equilateral triangle