Question

Solve :- Ques 5 ) (a) .

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Answer 1

Hey There!

Let's solve...

We have

`\angle \: odb = \angle \: cao \\ \\ \angle \: dbo = \angle \: aco \\ \\`

Using AA Criterion of Similarity we have

`\triangle \: obd \: - \triangle \: oac \\ \\`

This implies that

`(od)/(ob) = (oa)/(oc) \to (6)/(3 + 2 ) \: or \: (6)/(5) = (oa)/(oc) \\ \\ \to \: oa = (6)/(5) oc`

Now,

`ab = ao - bo \\ \\ = (6)/(5)oc - bo = (6)/(5)(od - oc) \\ - bo \\ \\ = (6)/(5)(6 + 4cm) - 5cm \\ \\ = 7cm`

Note:Every letters should be in capital, i don't have any option here so i can't do.

I hope it is helpful to you...

Cheers!_________