求tan44°cot45°tan46°的值

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求tan44°cot45°tan46°的值
求tan44°cot45°tan46°的值

求tan44°cot45°tan46°的值
tan44°cot45°tan46°
=cot(90-44°)*1*tan46°
=cot46°tan46°
=1

tan44°cot45°tan46°
=tan44*tan46*cos45
=1*cos45
=cos45
=√2/2

tan44°cot45°tan46°
=(tan44°cot44°)cot45°
=1*1
=1