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)
(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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