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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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A discussion, with example, of an ambiguous case.
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Ask Dr. Math
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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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Using the law of sines and law of cosines to solve non-right triangles.
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Dave's Short Trig Course
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The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....
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SOS math
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Step-by-step solutions to odd-numbered problems from dozens of precalculus textbooks.
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Hotmath
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A discussion of the ambiguous case for side-side-angle specification.
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Ask Dr. Math
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How to solve Ambiguous Triangles.
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SparkNotes
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Step-by-step solutions to odd-numbered problems from dozens of trigonometry textbooks.
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Hotmath
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