Need help with a q (1 Viewer)

[xibu34]

Only at a at the moment, I know x coordinate would be 0 but not sure how I'd find the y coordinate.

I'm guessing the equation for the circle that B and A lie on is


so maybe


is the half that B lies on, I don't know where to go from there

 

[jimmysmith560]

Would the following working help for part (a) and part (b)?




Therefore matching the answers provided in the textbook.

 

[xibu34]

Would the following working help for part (a) and part (b)?

View attachment 35444
View attachment 35445

Therefore matching the answers provided in the textbook.

Cheers, this helped heaps !

Cambridge q's are really a different beast to Math In Focus...