The value of sin ang con 9) = (D) none of these

The value of (cos3 theta)/(2cos2 theta-1) is equal to cos theta(b)sin theta (c) tan theta(d) none of these

If no solution of 3siny+12sin^3x=a lies on the line y=3x , then (a) a in (-oo,-9)uu(9,oo) (b) a in [-9,9] (c) a in {-9,9} (d) none of these

If 0 sin(cos x)(D) None

In any triangle, the minimum value of r_1r_2r_3//r^3 is equal to (a) 1 (b) 9 (c) 27 (d) none of these

The maximum value of 12 sin theta-9 sin ^(2) theta is

In any triangle, the minimum value of r_1r_2r_3//r^3 is equal to 1 (b) 9 (c) 27 (d) none of these

If A+B+C=0 , then the value of sin^2A+cosC(cosAcosB-cosC)+cosB(cosAcosC-cosB) is equal to: -1 (b) 0 (c) 1 (d) none of these

The maximum value of 12 sin theta -9 sin ^(2) theta is

The maximum value of 12 sin theta -9 sin ^(2) theta is.............. A) 3 B) 4 C) 5 D) 2