练习1:2sin30°+3tan30°+cot45° 练习2:cos^2 45°+tan60°cos30°
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练习1:2sin30°+3tan30°+cot45°练习2:cos^245°+tan60°cos30°练习1:2sin30°+3tan30°+cot45°练习2:cos^245°+tan60°cos3
练习1:2sin30°+3tan30°+cot45° 练习2:cos^2 45°+tan60°cos30°
练习1:2sin30°+3tan30°+cot45° 练习2:cos^2 45°+tan60°cos30°
练习1:2sin30°+3tan30°+cot45° 练习2:cos^2 45°+tan60°cos30°
练习1:
2sin30°+3tan30°+cot45°
=2×1/2+3×根号3/3+1
=2+根号3
练习2:
cos^2 45°+tan60°cos30°
=1/2+根号3×根号3/2
=2
2sin30°+3tan30°+cot45°
=2*1/2+3*根号3/3+1
=2+根号3
cos^2 45°+tan60°cos30°
=(*根号2/2)^2+根号3*根号3/2
=1/2+3/2
=2
练习1:2sin30°+3tan30°+cot45° 练习2:cos^2 45°+tan60°cos30°
sin30°+cos30°-2tan30°*tan60°=?
2sin30°-sin²45°+tan30°
计算cos45°-cos60°分之sin30°-2sin45°+根号3tan30°
这个怎麼做2sin30°+3tan30°-tan45°-(√3)°
2sin30°·cos45°-(sin60°)负二次方+根号3tan30°
sin30°×cos30° -tan30°
sin30°-tan30°+cos45°
cos30°tan30°/sin30等于多少?
(1)1—2sin30°cos30°(2)3tan30°—tan45°+2sin60°(3)1+sin60°分之cos60°+tan30°分之1
计算:sin30°+cos²45°-tan60°×tan30°:sin30°+3cos²45°-tan60°×tan30°
sin30°/(cos45°—cos60°)—2cos45°+根号3tan30°等于多少?
计算、tan平方60°+4sin30°cos45°、sin30°/(1+cos30°)+1/tan30°
3tan30°×cos30°+tan45°+sin30°-sin60°求解要过程
计算 sin30°+cos²60°-tan45°-根号3*tan30°
sin30°+tan45°/cos30°+tan30°求过程
sin30°、cos30°、tan30°的大小关系是
tan30°/(1-tan30°×tan30°)=?