Find θ in each of the following.
1. 1/cos4θ=tan4θ
sin cos tan (only one)
2008-03-15 9:50 pm
回答 (2)
2008-03-16 7:19 pm
✔ 最佳答案
1/cos4θ=tan4θ 1=tan4θ *cos4θ
1=sin4θ/cos4θ*cos4θ
1=sin4θ
4θ=90
θ=22.5
參考: 自己
2008-03-15 10:11 pm
1 = tan4θcos4θ
1 = sin4θ/ cos4θ x cos4θ
1 = sin4θ
4θ = 90∘
θ= 22.5∘
2008-03-15 14:12:00 補充：
∘ 係degree的符号...唔知點解打唔到出黎
1 = sin4θ/ cos4θ x cos4θ
1 = sin4θ
4θ = 90∘
θ= 22.5∘
2008-03-15 14:12:00 補充：
∘ 係degree的符号...唔知點解打唔到出黎
收錄日期: 2021-04-23 22:47:33
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https://hk.answers.yahoo.com/question/index?qid=20080315000051KK01365