Evaluate sec^2 30 degree + cot^2 45 degree - cosec^2 60 degree cos^2 30 degree.

• sec^2 30 degree+cot^2 45 degree-cosec^2 60 degree cos^2 30 degree
  =2^2+1^2-(2/square root of 3)^2(square root of 3/2)
  =4+1-(4/3)(3/4)
  =5-1
  =4
  so the answer=4
• 10 years agoHelpfull: Yes(0) No(3)
• ((4/3)+1)-((4/3)*(3/4))= 7/3 = 2.33
  i hope soooo..
• 10 years agoHelpfull: Yes(0) No(2)
• (2/sqrt3)^2+(1)^2-(2/sqrt3)^2*(sqrt3/2)^2
  =(4/3)+1-(4/3)*(3/4)
  =(4/3)+1-1
  =4/3
• 10 years agoHelpfull: Yes(0) No(0)