This trigonometry video tutorial explains how to use reference angles to evaluate trigonometric functions such as sine, cosine, tangent, secant, cosecant, and cotangent with positive and negative angles in radians and degrees.. You need to have a good understanding of right triangle trigonometry, SOHCAHTOA, 30-60-90 triangle and the 45-45-90 triangle. This tutorial contains plenty of examples and practice problems.
Trigonometry – Basic Introduction: https://www.youtube.com/watch?v=g8VCHoSk5_o
Sin Cos Tan – Trigonometry Table: https://www.youtube.com/watch?v=yjXwUZcqyE0
30-60-90 Special Right Triangle Trigonometry: https://www.youtube.com/watch?v=yJMGIKCVO-s
Example Problems With 30-60-90 Triangles: https://www.youtube.com/watch?v=p70UBGCHZrQ
45-45-90 Special Right Triangle Trigonometry: https://www.youtube.com/watch?v=t1YLjNJvPog
Example Problems With 45-45-90 Triangles: https://www.youtube.com/watch?v=xzMirNSv1d0
Special Patterns For Right Triangles: https://www.youtube.com/watch?v=MeBcJPdjeI4
Cofunction Identities: https://www.youtube.com/watch?v=35fxto48HZY
Angle of Elevation Word Problems: https://www.youtube.com/watch?v=uyKvSe6Ltgs
Evaluating Trig Functions Given a Point: https://www.youtube.com/watch?v=P8rdY2ahkms
A Simple Trick To Remember Trig Values: https://www.youtube.com/watch?v=YDuPdLL9GGo
Exact Value of 5 Remaining Trig Functions: https://www.youtube.com/watch?v=H7GwDntpGUY
Reference Angles and Trig Functions: https://www.youtube.com/watch?v=V8LEHEzdU2U
How To Graph Trigonometric Functions: https://www.youtube.com/watch?v=bm8oYKKlCXI
Evaluating Inverse Trig Functions: https://www.youtube.com/watch?v=jt7p-mCC0ng
The Missing Side Length of a Triangle: https://www.youtube.com/watch?v=tielQ3ejh70
The Missing Angle of a Triangle: https://www.youtube.com/watch?v=4Dv5IFqATrc
How To Solve Two Triangle Trig Problems: https://www.youtube.com/watch?v=OTP885mApV8
Two Triangle Trig Problems – More Examples: https://www.youtube.com/watch?v=QM1T6eL8t48
Trigonometry – Real Life Applications: https://www.youtube.com/watch?v=sCyQ9DcDp2E
Calculate The Height of a Building Using Trig: https://www.youtube.com/watch?v=y1UP6nfE988
Bearings Vs Direction – Trig Word Problems: https://www.youtube.com/watch?v=jyi5zW8mavs
Bearing Problems and Navigation: https://www.youtube.com/watch?v=cSKAqfGXOPI
Verifying Trigonometric Identities: https://www.youtube.com/watch?v=Rf05H8ogHLg
Sum and Difference Identities: https://www.youtube.com/watch?v=gEhxBFQCYic
Trigonometry Final Exam Review: https://www.youtube.com/watch?v=OAsbx4TEnL0
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