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题型:填空题 题类:真题 难易度:普通

2016年高考文数真题试卷(山东卷)

观察下列等式:

(sin 2+(sin 2= ×1×2;

(sin 2+(sin 2+(sin 2+sin( 2= ×2×3;

(sin 2+(sin 2+(sin 2+…+sin( 2= ×3×4;

(sin 2+(sin 2+(sin 2+…+sin( 2= ×4×5;

照此规律,

(sin 2+(sin 2+(sin 2+…+(sin 2=

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