Question

let a be (-a,0) b(0,a) and c (alpha beta) vertices of triangle​

Answer 1

Answer:

Since

<br> A is obtuse <br>

<br>

<br> Also, A,B,C and non-collinear. <br>

<br>

<br>

<br> But A,B,C are collinear for

<br>

correct interval for B is <br>