Question

2/3 (cos⁴30° - sin⁴45°) - 3(sin²60° - sec²45°) +1/2 cot²30°
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............ Evaluate​

Answer 1

Step-by-step explanation:

=2/3(9/16-1/4)-3(3/4-2)+1/2×1/3

=(2/3×5/16)-(3×-5/4)+1/6

=5/24-15/4+1/6

=5-90+4/24

=-81/24