Question

evaluate: 4/cot²30+1/sin²60-cos²45​

Answer 1

Answer:

13/6

Step-by-step explanation:

4/cot^2 30°+1/ sin^2 60°-cos^2 45°

4/(√3)^2+1/(√3/2)^2-(1/√2)^2

4/3+4/3-1/2

8+8-3/6

13/6