In the triangle ABC, external bisectors of angles B and C meet at D. If angles `x, y and z` are in the ratio `7:8: 9` then ratio of the angles `a, b, c` is

If the angles of a triangle ABC are in the ratio 2 : 3 : 1, then the angles, /_A, /_B and /_C are

In a triangle ABC , the bisectors of angle B and angle C meets at point O. If angle BOC=142^@ then the measure angle A is: triangle ABC में, angle B तथा angle C के द्विभाजक O पर मिलते हैं | यदि angle BOC=142^@ है, तो angle A का माप ज्ञात करे |

In a triangle ABC, the bisector of angle A meets the opposite side at D.Using vectors prove that BD:DC=c:b.

The bisectors of angles A and B of a scalene triangle ABC meet at O. What is the relation between angle ACO and angle BCO?

ABC is a triangle in which /_A=72^(0), the internal bisectors of angles B and C meet in O. Find the magnitude of /_BOC.