Rookie question

[isualum12]

So first year question.......

I have had this happen twice now but I can't seem to find the answer in the rule book...Please help with the answer and the rule/section. (2 questions kind of)

1) A1 is inbounding the ball on the side line to start the quarter...(A) leans way over the line with ball and then throws it in...(b) starts to throw the ball but stops him/herself from making the throw but in doing so loses balance and steps over the line with ball in hand. Quickly steps back and throws the ball into the back court to A2.

2. Same as above but this time it is after a basket has been made under the basket.

I appreciate your help here and on other posts I have learned from on here....