tan^2 30應該點計

2007-04-03 7:22 am
tan2次方30度,點計
個30 2次方先定係tan左先2次方

回答 (5)

2007-04-03 7:31 am
✔ 最佳答案
tan^2 30 is (sin^2 30)/(cos^2 30)
= (1/2) (1/2) / [(root3/ 2) ^2]
=1/3
2007-04-03 7:36 am
tan² 30°
= (tan 30°)²
= (1/開方3)²
=1/3
2007-04-03 7:33 am
其實我阿sir話應該
tan^2 30唔應該係(tan 30)^2
佢話這些是規矩,而且那些數學家,工程師,科學家等也是用tan^2 30來表示.....
參考: 博士(我阿sir)
2007-04-03 7:25 am
tan2次方30度
= tan² 30º
= (tan 30º)²
= .......

係tan左先2次方
2007-04-03 7:25 am
tan^2 30 = (tan30)^2


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