+91-735-322-1155
FlagBACK
Flag Analytical Geometry> If I1,I2,I3 are excenters of a triangle a...
question mark

If I1,I2,I3 are excenters of a triangle and I is incenter then sum
II1+II2+II3= ?

Brown sam , 11 Years ago
Grade 12
anser 1 Answers
Arun Kumar

Last Activity: 11 Years ago

Hello Student,
There’s a result that says
\\II_1=4Rsin{A \over 2} \\II_2=4Rsin{B \over 2} \\II_3=4Rsin{C \over 2} \\=>II_1+II_2+II_3=4R(sin{A \over 2}+sin{B \over 2}+sin{C \over 2})
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Other Related Questions on analytical geometry

question mark
  • The locus of the point represented by x= t^2 +t+1 and y=t^-t+1 is 
analytical geometry
1 Answer Available

Last Activity: 3 Years ago

question mark
show that the centroids of the triangles of which three perpendiculars lie along the lines y=m1x,y=m2x,y=m3x lie on y(3+m2m3+m3m2+m1m2)=x(m1+m2+m3+3m1m2m3)
analytical geometry
1 Answer Available

Last Activity: 3 Years ago

question mark
show that the equation (ab-h²)(ax²+2hxy+by²+2gx+2fy)+af²+bg²-2fgh=0 represent a pair of straight lines and that these straight lines form a rhombus with the lines ax²+2hxy+by²=0
analytical geometry
1 Answer Available

Last Activity: 3 Years ago

question mark
A circle has its center on straight line 5x-2y+1=0 and cuts the x axis at two points whose absciasse are -5,3 find equation of the circle and it's radius. 
 
analytical geometry
1 Answer Available

Last Activity: 3 Years ago

question mark
Prove that ax^2+by^2+cz^2 +2ux+2vy+2wz+d=0 represent a cone if u^2/a+v^/b+w^2/c=d
analytical geometry
1 Answer Available

Last Activity: 3 Years ago