Question

In given fig BD bisects <B and is perpendicular to AC . Find BD. AD=3cm DC=7 cm. ​

Answer 1

▪ Given:

• BD ⏊ AC

• AD = 3 cm

• DC = 7 cm

▪ To find :

• BD = ?

▪ Solution :

According to Geometric mean theorem,

∴ BD² = AD × DC

∴ BD² = 3 × 7

∴ BD² = 21

∴ BD = √21