Prove the identity cot θ+tan θ=2csc2 θ
Hence find the values of θ,in the interval 0° < θ<180° ,which (cot θ+tan θ)² =4
plx show your steps clearly
ans:45° ,135°
(1) Trigonometric functions
2007-03-02 3:20 am
回答 (1)
2007-03-02 6:34 am
✔ 最佳答案
Please find the answers as follows:圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Maths/Crazytrigo45.jpg
參考: My Maths knowledge
收錄日期: 2021-04-12 23:47:40
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