I really need your help.
Please help me !
Here are my questions
1. Use the information given about the angle θ, 0≤θ≤2π, to find the exact value of each trigonometric function.
tanθ=−9, sinθ<0
(a) sin(2θ) (b) cos(2θ) (c) sin θ over 2 ( d) . cos θ over 2
2.Find the exact value of sin(2sin inverse square roof 3 over 2 )
請高手指點
Thanks !
Help me! 三角學
2014-12-05 8:28 pm
回答 (3)
2014-12-05 9:58 pm
✔ 最佳答案
The answer is as follows :圖片參考：https://s.yimg.com/lo/api/res/1.2/jHBU_JVJtrLNJVVL08DqRA--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/https://farm8.staticflickr.com/7537/15762880710_909dcd0c06_o.png
https://farm8.staticflickr.com/7537/15762880710_909dcd0c06_o.png
參考: pingshek
2014-12-05 9:24 pm
Yes. It is.
2014-12-05 9:17 pm
1c 係 sin (θ/2) ?
1d 係 cos (θ/2) ?
2 係 sin { 2 sin^(-1) [ √(3/2) ] } ?
1d 係 cos (θ/2) ?
2 係 sin { 2 sin^(-1) [ √(3/2) ] } ?
收錄日期: 2021-05-01 09:36:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20141205000051KK00027