The numerical value of (〖cox〗^2 45°)/(〖sin〗^2 60°)+(〖cos〗^2 60°)/(〖sin〗^2 45°)-(〖tan〗^2 30°)/(〖cot〗^2 45°)-(〖sin〗^2 30°)/(〖cot〗^2 30°)

• A. 11/4
• B. 3/4
• C. 1/2
• D. 1/4