In a triangle ABC, angle B = 100 degrees, angle C = 50 degrees,
BC = a, AC = b, and AB = c. Prove that: (1) Area of triangle ABC = bc/4;
(2) Inradius ;
(3)
.
This entry contributed by Sumith Peiris, Moratuwa, Sri Lanka.
See also:
Geometry Problems
1281-1290
Visual Index
Open Problems
All Problems
Triangle
Triangle Area
30 degrees
Angles
Inradius