Question

3cos^2 60 + 2cot^2 30 - 5sin^2 45

Answer 1

Answer:

Step-by-step explanation:

3×(1/2)^2+2(√3)^2-5(1/√2)^2

3/4+2×3-5×1/2

3/4+6-5/2

27-10/4

17/4

Answer 2

Answer:

answer=17/4

Step-by-step explanation:

cos 60=1/2

cot 30 =root 3

sin 45 = 1/root2

3*(1/2^2) + 2(root 3^2) - 5(1/ root 2^2)

3/4 + 6- 5/2

(3+24-10)/4

17/4