Posted by **priyanka** on Friday, May 11, 2012 at 11:16am.

in triangle abc ad is bisector of angle a and angle b is twice of angle c prove that angle bac is equal to 72

- math -
**Steve**, Friday, May 11, 2012 at 12:03pm
Not enough information. What does ad have to do with anything?

Now, if bad = abd, then we have

x + 2x + 2x = 180, so x = 36

and bac = acb = 72

## Answer this Question

## Related Questions

- maths - In triangle ABC angle B > angle C if AM is the bisector of angle BAC...
- maths - in triangle abc angle b = 2angle c.d is a point ob bc such that ad ...
- math - ABC is a triangle with a right angle at A. M and N are points on BC such ...
- heeelp MATH - ABC is a triangle with a right angle at A.M and N are points on BC...
- Math (Geometry) - ABC is a triangle with a right angle at A. M and N are points ...
- Math (Geometry) - ABC is a triangle with a right angle at A. M and N are points ...
- math - ABC is a triangle with a right angle at A. M and N are points on BC such ...
- help math - In triangle ABC, points D,E,F are on sides BC,CA,AB respectively ...
- Maths - X and Y are points on the sides BC and AC of a triangle ABC respectively...
- MATHS - ABC is a triangle with a right angle at A. M and N are points on BC such...