sin² 30 cos²45 + 4tan² 30 +½ sin² 90 + ⅛cit²60
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Answer:
1/4×1/2 + 4×1/3 + 1/2×1 + 1/8×1/3
1/8 + 4/3 + 1/2 + 1/24
3/24 + 32/24 + 12/24 + 1/24
48/24 = 2
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