if cot 0 = 7/8, then (1+cos 0) ( 1-cos 0)/(1 + sin0 )(1- sin 0) =

• Ans:
  64/49
  soln:
  (1+cos 0)( 1-cos 0)= 1-cos^2 0 = sin^2 0
  (1 + sin0 )(1- sin 0) = 1-sin^2 0 = cos^2 0
  ==> sin^2 0 / cos^2 0 = tan^2 0
  tan^2 0 = 1/(cot^2 0) = (8/7)*(8/7)
  =====> Ans=64/49
• 11 years agoHelpfull: Yes(1) No(0)