中英文版(高二上數學)第一章第四節和角公式與差角公式(餘弦、正弦、正切的和角與差角公式)
3.18 正弦、餘弦的和角與差角公式
https://www.youtube.com/watch?v=P3v8SkPc3pk
108新課綱 高二數學 1-2【觀念】正弦與正切的和角與差角公式
https://www.youtube.com/watch?v=k7Cxzu1eWyI
[高二三角函數][正餘弦和差角公式證明(1)]
https://www.youtube.com/watch?v=ec30dAHuDJg
高二三角函數][正餘弦和差角公式證明(2)]
https://www.youtube.com/watch?v=B9lO4rfPGd0
3.19 正切和角公式推導
https://www.youtube.com/watch?v=R-4pqZhlGr0
3.20 正切的和角公式與差角公式應用
https://www.youtube.com/watch?v=OfuJXT03qEc
B3---1-4---正切的和差角公式(理論)
https://www.youtube.com/watch?v=qkjPGiRbaJc
高中數學_三角函數的應用_三角和角公式_正切的和角與差角公式_陳亮君
https://www.youtube.com/watch?v=kMWBzhkcJCU
三角函数正余弦和角公式推导
https://www.youtube.com/watch?v=uX6hxwW5BYM
高中_數學_惠文高中_三角函數_和角公式、差角公式
https://www.youtube.com/watch?v=dd0If7KjNfc
高中_數學_惠文高中_三角函數_差角公式證明1
https://www.youtube.com/watch?v=wSgXex-vCUw
高中_數學_惠文高中_三角函數_差角公式證明2
https://www.youtube.com/watch?v=zlKLG8z-t6E
高中_數學_惠文高中_三角函數_和角公式與差角公式練習1
https://www.youtube.com/watch?v=RfoVfrL8kK8
高中_數學_惠文高中_三角函數_和角公式與差角公式練習2
https://www.youtube.com/watch?v=QnbbJ1DU2jk
高中_數學_惠文高中_三角函數_和角公式與差角公式練習3
https://www.youtube.com/watch?v=aiDW5O9HL2o
高中_數學_差角、和角、倍角和半角公式
https://www.youtube.com/watch?v=juwZgth5ros
高中_數學_差角公式_觀念5 正切的差角公式
https://www.youtube.com/watch?v=RAkQuNJ5gTs
高中_數學_差角公式_範例6
https://www.youtube.com/watch?v=hT3qwmQJB_8
高中_數學_差角公式_範例7
https://www.youtube.com/watch?v=BL_zYcTC4pk
高中_數學_差角公式_範例8
https://www.youtube.com/watch?v=pjKlWpOk1ak
高中_數學_差角公式_範例9
https://www.youtube.com/watch?v=OTcVNpPin-M
高中_數學_差角公式_演練6
https://www.youtube.com/watch?v=EYEhTNnZHFs
高中_數學_差角公式_演練7
https://www.youtube.com/watch?v=6kupBIdUjz0
高中_數學_差角公式_演練8
https://www.youtube.com/watch?v=nOslmWp5RlY
高中_數學_差角公式_演練9
https://www.youtube.com/watch?v=8rY3u-tWw6s
Trigonometric Identities (1 of 3: Reciprocals, Ratios & Complements)
https://www.youtube.com/watch?v=UmP1h3jgpAs
Trigonometric Identities (2 of 3: Pythagorean Relationships)
https://www.youtube.com/watch?v=cW-Trdxdjzk
Trigonometric Identities (3 of 3: Example proofs)
https://www.youtube.com/watch?v=JhglrOzGRJQ
Sum and Difference Identities & Formulas - Sine, Cosine, Tangent - Degrees & Radians, Trigonometry
https://www.youtube.com/watch?v=sU2pyMR8GZ4
Sum and Difference Identities of Sine and Cosine
https://www.youtube.com/watch?v=gEhxBFQCYic
Verifying Trigonometric Identities
https://www.youtube.com/watch?v=Rf05H8ogHLg
Product To Sum Identities and Sum To Product Formulas - Trigonometry
https://www.youtube.com/watch?v=8Prc7VGt40w
Product to Sum and Sum to Product Formulas
https://www.youtube.com/watch?v=KRYoFdfhNXE
Sum and Difference Trigonometric Identities
https://www.youtube.com/watch?v=SYeBT1xjTa8
Verifying Trigonometric Identities Involving Sum & Difference
https://www.youtube.com/watch?v=OYfeClZiNEU
Verifying Trigonometric Identities Pt 1
https://www.youtube.com/watch?v=qa_dBedoT7A
Verifying Trigonometric Identities Pt2
https://www.youtube.com/watch?v=q8k-sS7qRts&t=28s
Verifying Trigonometric Identities Pt3
https://www.youtube.com/watch?v=mAnw4ImaPK0
https://www.youtube.com/c/MasterWuMathematics
The Exact Value for Tangent of 15 Degrees - 3 Different Ways - tan(15)
https://www.youtube.com/watch?v=-1rGGeGaLTA
The Exact Value for Tangent of 75 Degrees - Two Different Ways - tan(75)
https://www.youtube.com/watch?v=w1byD7OKlA4
The Exact Value for Tangent of 37.5 Degrees, tan(37.5)
https://www.youtube.com/watch?v=rstnUFyFd80
The Exact Value for Tangent of 36 Degrees, tan(36)
https://www.youtube.com/watch?v=UMO2UrAedbc
How to Learn Tangent Law Solving for a Side Grade 11 University Lesson 5 3
https://www.youtube.com/watch?v=_rj18VMFS3A
How to use tangent to find the missing leg of a triangle
https://www.youtube.com/watch?v=pfRTAI6Anhk
deriving the law of tangents
https://www.youtube.com/watch?v=zOCO5WXiDKk
Trigonometry Word Problem, Finding The Height of a Building, Example 1
https://www.youtube.com/watch?v=y0b90Yz-LPM
Trigonometry Word Problem, Example 2
https://www.youtube.com/watch?v=ErVTgggAQjs
Trigonometry Word Problem, Determining the Speed of a Boat, Example 3
https://www.youtube.com/watch?v=LXPu-POyb4s
Defining the Trigonometric Ratios
https://www.youtube.com/watch?v=S113G9FDDXI
部分資料來源: 學習吧
https://www.learnmode.net/knowledge/version?p=26#focus
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