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ResourceSpotlight
Students will sinusoidal regression to determine equations to model various data sets and use the equations to make inferences.
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Texas Instruments, Inc.
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A helpful scientific calculator that runs in your web browser window.
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Holt Online Learning
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This trigonometry laws and identities help sheet contains the law of cosines, law of sines, and law of tangents. It also contains the following identities: tangent identities, reciprocal identities, Pythagorean identities, periodic identities, even/odd identities, double angle identities, half angle identities, product to sum identities, sum to product identities, sum/difference identities, and cofunction identities.
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eCalc.com
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Detailed instruction on trigonometric identities, functions, special angles, Law of Sines and Cosines, and inverse trigonometric functions.
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Mathematics Articles by Stan Brown
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Contains formulas to help with pythagorean identities, unit circle values, periods of trig functions, angle addition identities, and much more.
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Pauls Online Math Notes
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Almost all of the Trigonometric Identities, including Reciprocal identities, Pythagorean identities, Quotient identities, Co-Function identities, Even-Odd identities, Sum-Difference formulas, Double- and Half-angle formulas, and Sum-to-Product and Product-to-Sum formulas.
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Table of Trigonometric Identities
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This youtube video shows an easy way to remember the values of the unit circle that can be helpful for trigonometry students.
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Unit Circle Tricks
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Explains how we can use the unit circle to find the trig functions for any angle, explains inverse functions, and how to graph them.
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Dave's Short Trig Course
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How to solve trigonometric equations.
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SOS Math
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