# math

posted by
**Anonymous**
.

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CNNB=21, what is CMMB?

posted by
**Anonymous**
.

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CNNB=21, what is CMMB?