A. (a+b) cot α
B. (a-b) cot α
C. (a+b) cot β
D. (a-b) cot β
If α,β are solutions of a cos 2θ+b sin 2θ=c, then tan α tan β=
If sin A= sin2 B and 2 cos2 A =3 cos2 B, then the ΔABC is
In ΔABC, if A=900 then r2 +r3 =