Sum and Difference Identities & Formulas - Sine, Cosine, Tangent - Degrees & Radians, Trigonometry
Вставка
- Опубліковано 10 лип 2024
- This trigonometry video tutorial explains how to use the sum and difference identities / formulas to evaluate sine, cosine, and tangent functions that have angles that are not commonly found in the unit circle. Examples include angles both in degrees and radians.
Bearing Problems and Navigation:
• Bearing Problems & Nav...
Two Triangle Problems - More Examples:
• Trigonometry - How To ...
Verifying Trigonometric Identities:
• Verifying Trigonometri...
Double Angle Identities:
• Double Angle Identitie...
Verifying Trig Identities With Double Angles:
• Verifying Trigonometri...
__________________________
Half Angle Formulas:
• Half Angle Formulas & ...
Verifying Trig Identities Using Half Angles:
• Verifying Trigonometri...
Inverse Trig Functions With Double Angles:
• Inverse Trig Functions...
Right Triangle Trig With Half Angle Identities:
• Right Triangle Trigono...
Product To Sum + Sum to Product Formulas:
• Product To Sum Identit...
______________________________
Solving Trig Equations - Finding All Solutions:
• Solving Trigonometric ...
Solving Trig Equations With Multiple Angles:
• How To Solve Trigonome...
Solving Trig Equations With Double Angles:
• Solving Trigonometric ...
Trigonometry Final Exam Review:
• Trigonometry Final Exa...
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections
Final Exams and Video Playlists: www.video-tutor.net/
Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections
Evaluating Inverse Trig Functions: ua-cam.com/video/so9Tjk6Ga2U/v-deo.html
Verifying Trigonometric Functions: ua-cam.com/video/NE6zcJSZhX0/v-deo.html
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@@TheCyberSatyr im in calc but im here bc i dont remember some of these identities... boy trig identities sure are fun!
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The two triangles actually helped me to understand the unit circle so much better. Thank you!
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Hello! Just a question. For 17:07, can I just choose between any two angles in the unit circle that would sum up to 345 degrees? Or is there some basis/criteria that is needed to be followed? Thanks in advance.
they have to be angles that you know of from the unit circle, you can do 300 and 45, 210 and 135, etc. but it wouldn't be helpful to use 200 and 145 since we don't know those from the unit circle
14:43 .... I've coined this phenomena as "Einstein fog"... when you're so used to solving exponentially more intricate and tedious mathematic equations, only to return to something like basic division - it takes a moment for your brain to recalibrate to such a basic way of thinking. I noticed from the brief pause and "uhh". Einstein himself was incredibly guilty of this to a point where he'd even forget elementary equating.
I can relate to this, a lot. I can solve a lot of complicated equations without calculator, only to use calculator for simple and basic operations like addition
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At 10:44 is there anything wrong with doing tan(60-45) or should I learn to use the lowest possible combination for good practice?? Just wondering if there is any difference?
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[15:35/21:44] Mark, tan(23pi/12) = tan(2pi-pi/12) = tan(-pi/12) = -tan(pi/12) = (3)^(1/2) - 2. (per previous example)
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