Colin buys a car for £22000. It depreciates at a rate of 1% per year.
How many years will it take to be worth less than £20000?

faster, im not sure why but i know it is faster

we know that

1) the inscribed angle measures half of the arc it comprises.

so

m∠dgf= > expression

2) the opposite angles in an inscribed quadrilateral are supplementary angles

so

m∠dgf=

m∠dgf=°

substitute in the expression to find the value of arc ef

therefore

the answer is

the measure of the arc ef is