Pls help with this question in geometry and pls show steps thank you

Question

asked Sep 16, 2022 182k views

1 Answer

Arunjith R S · Answer 1 · 2022-09-22T19:59:16+0000

Answer:

9 cm

Explanation:

In a 30°-60°-90° triangle, the ratio of the shortest to the longest sides is 1 : 2.

That means DB = 1/2BC = 3 cm. It also means AB = 2BC = 12 cm.

Then the length of AD is ...

AD +DB = AB

AD = AB -DB = 12 cm -3 cm

AD = 9 cm