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求下列各式的值:sin60°-tan45°;
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教案备课库《初二年级数学同修学案201522055B》真题及答案
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计算2sin60°+tan45°=.
2cos30°+sin60°+2tan45°•tan60°.
如图所示在数轴上点
所表示的数x的范围是( ) A.
sin30°
cos30°
cos45°;
tan30°
3cos60°
tan60°。
求下列各式的值2sin30°+3tan30°+tan45°.
求下列各式的值.tan45°·sin60°-4sin30°·cos45°+·tan30°.
2cos30°﹣|1﹣tan60°|+tan45°•sin45°.
Sin600tan300+︱sin450-1︱+tan600tan4500
求下列各式的值tan45°-sin30°•cos60°
计算sin230°﹣2sin60°+tan45°﹣tan60°+cos230°
下列结论错误的是
=sin60°
=sin30°
=tan45°
=tan60°
求下列各式的值.tan30°-sin60°·sin30°
计算2cos60°+cot30°tan45°﹣sin30°tan60°.
如图所示在数轴上点
所表示的数x的范围是( ) A.
sin30°
cos30°
cos45°;
tan30°
3cos60°
tan60°。
2sin60°+tan45°=_______.
sin230°+cos245°+sin60°·tan45°
求下列各式的值tan30°cos60°+tan45°cos30°.
sin60°+cos30°-3tan300×tan450
sin230°+cos245°+sin60°·tan45°
计算sin60°-tan45°
先化简再求代数式÷1-的值其中x=2sin60°-tan45°.
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