15. Two points P (2,0) and Q (-2,0) are given. R is a variable point on one side of the line PQ such that (angleRPQ)-(angleRQP) is a positive constant (2alpha). The locus of R is

15. Two points P (2,0) and Q (-2,0) are given. R is a variable point o

1.	15. Two points P (2,0) and Q (-2,0) are given. R is a variable point on one side of the line PQ such that (angleRPQ)-(angleRQP) is a positive constant (2alpha). The locus of R is
Answer» 15. Two points P (2,0) and Q (-2,0) are given. R is a variable point on one side of the line PQ such that (angleRPQ)-(angleRQP) is a positive constant (2alpha). The locus of R is