Recently Commented Questions

• trigo
  prove.. 1.cos2θcosθ/2-cos3θcos9θ/2=sin5θsin5θ/2 2.sinAsin(A+2B)-sinBSin(B+2A)=sin(A-B)sin(A+B) ...
  0·2· #Mathematics#Trignometry
  commented2013-08-12 07:44:44
• prove...
  1.if tanx + tan(x+π/3) +tan(x+2π/3)=3 prove , 3tanx - tan3x/1 - 3tan2x =1 2.if α,β are two different values of θ when α≠β,where 0< α,β <2π which satisfy the equation 6cosθ + 8sinθ =9 find the value of sin( ...
  0·2· #Mathematics#Trignometry
  commented2013-07-13 10:10:11