Josiah and elena are planning to start running together a couple days per week. in order to estimate how far they could run together in a certain amount of time, they each timed a 1/2 mile solo run. josiah ran the 1/2 in 5 minutes, 30 seconds, while elena ran 1/2 in 5 minutes. what is the unit rate for each runner?

< 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⭐

question

given the diagram below, what is md?

the sum of the interior angles is 360°

take away from 360 the sum of the knows angles and you will have the angle d.

360 - 108 - 108 - 72 = 72°

yep b and c r the correct got it! : )