sin²30° ,cos²45° + 4tan²30° + ½sin²90° - 2cos²90° + 1/24 cos²A.
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Step-by-step explanation:
(1/2)²,1²+4(1/root3)²+,1/2×1²-2×0²
1/4,1+4(1/3)+1/××1-0
1/4,5(1/3)
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