As an estimation we are told €4 is $5.

what is the conversion rate from $ to €?

give your answer rounded to 2 dp (decimal places).

The conversion rate with 2 decimal places is $1.25

Step-by-step explanation:

We know that €4 is $5 as it is given in the problem as an estimation...

So we can use the rule of 3, to know the conversion rate between the two currencys.

We already know that €4 is $5, so we pose that €1 is $x

From this rule, we have that

and

and $1.25 for every € is the conversion rate.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐