Geometryhard · Past Paper
The length of the angle bisector of angle A in triangle ABC is given by:
A(2bc cos A/2) / (b+c)
Bbc sin A
Csqrt(s(s-a))
D0.5 * a * h
✓ Correct Answer: A — (2bc cos A/2) / (b+c)
This formula provides the exact length of the internal angle bisector from vertex A.
Share this question
More from Geometry
- Find the value of p if the points (1, 1), (2, 3), and (3, p) are collinear.
- A line which touches a circle at exactly one point is called a:
- Three circles of radius 1 cm touch each other externally. What is the area of the region enclosed between them?
- If the angle between two radii of a circle is 130 degrees, the angle between the tangents at the ends of the radii is:
- Angles that have a common vertex and a common arm but no common interior points are called: