计算或化简谢谢!求过程计算或化简1.根号3cos30°+根号2sin45°2.sin60°分之tan45°-cos60°×tan30°3(sin60°+cos45°)(sin60°-cos45°) 谢谢

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计算或化简谢谢!求过程计算或化简1.根号3cos30°+根号2sin45°2.sin60°分之tan45°-cos60°×tan30°3(sin60°+cos45°)(sin60°-cos45°) 谢谢
计算或化简谢谢!求过程
计算或化简
1.根号3cos30°+根号2sin45°
2.sin60°分之tan45°-cos60°×tan30°
3(sin60°+cos45°)(sin60°-cos45°) 谢谢

计算或化简谢谢!求过程计算或化简1.根号3cos30°+根号2sin45°2.sin60°分之tan45°-cos60°×tan30°3(sin60°+cos45°)(sin60°-cos45°) 谢谢
1.根号3cos30°+根号2sin45°
=√3*√3/2+√2*√2/2
=3/2+1
=5/2
2.sin60°分之tan45°-cos60°×tan30°
=1/(√3/2)-1/2*√3/3
=2√3/3-√3/6
=√3/2
3(sin60°+cos45°)(sin60°-cos45°)
=sin²60°-cos²45°
=(√3/2)²-(√2/2)²
=3/4-2/4
=1/4

﹙1﹚原式=3×√3/2+√2×√2/2=3√3/2+1
﹙2﹚原式=1/﹙√3/2﹚-1/2×√3/3=√3/2
﹙3﹚原式=﹙√3/2+√2/2﹚×﹙√3/2-√2/2﹚=1/4.

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