Cos² 26°+cos² 64°×sin² 26°+tan 36°/tan 54°
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=(sin^2 64° + cos^2 64°) (cos^2 64°) + cot 54°/tan 54°
= (1) (cos^2 64°) (cot 54°)(cot 54°)
= (cos^2 64°) (cot^2 54°)
= (1) (cos^2 64°) (cot 54°)(cot 54°)
= (cos^2 64°) (cot^2 54°)
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