Trigonometry in non-right angled triangles involves the sine and cosine rules to find unknown angles, sides, and areas. The sine rule, expressed as a ratio of side length to sine of its opposite angle, helps calculate missing values when at least one side-angle pair is known. The cosine rule, formulated to find a side or angle using known side lengths and included angles, is crucial when the sine rule is inapplicable. Additionally, a trigonometric formula for calculating a triangle's area without its height is also discussed, showcasing the versatility of trigonometric applications in geometry.
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1
Trigonometry beyond right-angled triangles
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2
Trigonometric laws and formulas usage
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3
Importance of triangle's angles and sides relationship
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4
To apply the sine rule, knowledge of at least one side and its opposite angle, plus another side or angle, is ______.
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5
Sine Rule Application
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6
Cosine Rule Application
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7
Trigonometric Area Formula
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