Geometry: Circles problem help

[pastel anvil]

dooes arc BQ means angle BAQ?

[tardy sentinel]

yes im pretty sure, the notation is weird

[pastel anvil]

or the angle it made with the centre?

[tardy sentinel]

arc BQ is the angle BAQ

I think that's why they said measure

[pastel anvil]

I see

[tardy sentinel]

but I solved it using the formula where angle A is just the arc bq/2

arc as in angle

that is the correct formula right?

oh wait

so it isn't

im confused now

[pastel anvil]

as I know arc means the angle made with the centre

[tardy sentinel]

look

this is the theorem I followed

I was confused when they had alpha and beta

does alpha and beta mean arc length here? or like wtf does this mean

[pastel anvil]

yes