Double Angle Identities (Patreon)

Double Angle Identities & Formulas of Sin, Cos & Tan - Trigonometry

This trigonometry video tutorial provides a basic introduction to the double angle identities of sine, cosine, and tangent. It explains how to derive the double angle formulas from the sum and difference identities of sin, cos, and tan and how to use the double angle formulas to find the exact value of trigonometric expressions using right triangle trigonometry and SOHCAHTOA. This video contains many examples and practice problems for you to learn this material. Access Full-Length Premium Videos: https://www.patreon.com/MathScienceTutor _____________________________________________________________________________________________ Verifying Trigonometric Identities: https://www.youtube.com/watch?v=Rf05H8ogHLg Sum and Difference Identities: https://www.youtube.com/watch?v=gEhxBFQCYic Double Angle Identities: https://www.youtube.com/watch?v=SE5SBTgrwH8 Verifying Trig Identities With Double Angles: https://www.youtube.com/watch?v=Wh7hM_FsN3Y Power Reducing Formulas: https://www.youtube.com/watch?v=U6yjjaK8aCc Half Angle Formulas: https://www.youtube.com/watch?v=9YI69okba3c Verifying Trig Identities Using Half Angles: https://www.youtube.com/watch?v=qWJ4HwJ_5LY Inverse Trig Functions With Double Angles: https://www.youtube.com/watch?v=waDbbpib9cM Right Triangle Trig With Half Angle Identities: https://www.youtube.com/watch?v=vEU25NlpaXA Product To Sum + Sum to Product Formulas: https://www.youtube.com/watch?v=8Prc7VGt40w Solving Trig Equations - Finding All Solutions: https://www.youtube.com/watch?v=kEcbxiLeGTc Solving Trig Equations With Multiple Angles: https://www.youtube.com/watch?v=eZPEW2hVUd0 Solving Trig Equations With Double Angles: https://www.youtube.com/watch?v=-R7394Dn854 ---------------------------------------------------------------------------------------------------------------------------------------------------------- Law of Sines: https://www.youtube.com/watch?v=8qezAG2r0sk More Examples - Law of Sines: https://www.youtube.com/watch?v=9fS0uA4iLxI Area of an Oblique Triangle: https://www.youtube.com/watch?v=vPt6j5e_uhE The Height of a Triangle - Heron's Formula: https://www.youtube.com/watch?v=a1PR9O1Va84 Law of Cosines: https://www.youtube.com/watch?v=9CGY0s-uCUE Polar Coordinates: https://www.youtube.com/watch?v=aSdaT62ndYE Polar Equations to Rectangular Equations: https://www.youtube.com/watch?v=flTz_pSzVFI Rectangular Equations to Polar Equations: https://www.youtube.com/watch?v=fTBkr27r3pw How To Graph Polar Equations: https://www.youtube.com/watch?v=jO4lwddfeDA Complex Numbers - De Moivre's Theorem: https://www.youtube.com/watch?v=J6TnZxUUzqU Dot Product of Two Vectors: https://www.youtube.com/watch?v=VzX8KJKFhlM ______________________________________________________________________________________________ Trigonometry - Basic Introduction: https://www.youtube.com/watch?v=g8VCHoSk5_o Introduction to Angles: https://www.youtube.com/watch?v=oxhXz9_uyiM Radians and Degrees: https://www.youtube.com/watch?v=JmLN3QxshlE Linear Speed and Angular Velocity: https://www.youtube.com/watch?v=FgTvlGm9jgE Clock to Angle Problems: https://www.youtube.com/watch?v=LEHYr0XfSyI Reference Angles: https://www.youtube.com/watch?v=E-xFXpVo14o The Six Trigonometric Functions: https://www.youtube.com/watch?v=WvoFgL4P_rw The Exact Value of Trig Functions: https://www.youtube.com/watch?v=bTdjcvm6pPo Evaluate Trig Functions - Reference Angles: https://www.youtube.com/watch?v=V8LEHEzdU2U How To Graph Trig Functions: https://www.youtube.com/watch?v=fo_q9mEAFp4 Evaluating Inverse Trig Functions: https://www.youtube.com/watch?v=jt7p-mCC0ng Angle of Elevation Problems: https://www.youtube.com/watch?v=uyKvSe6Ltgs Two Triangle Trigonometry Problems: https://www.youtube.com/watch?v=OTP885mApV8 Bearings Vs Direction - Word Problems: https://www.youtube.com/watch?v=jyi5zW8mavs Bearing Problems and Navigation: https://www.youtube.com/watch?v=cSKAqfGXOPI ______________________________________________________________________________________________ Trigonometry Final Exam Review: https://www.youtube.com/watch?v=OAsbx4TEnL0