Sine & Cosine of Complementary Angles
Explanation
Complementary angles add to 90°.
Relationship:
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sin θ = cos(90° − θ)
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cos θ = sin(90° − θ)
Example: θ = 30° → sin 30° = cos 60° = 1/2
Why useful: Allows switching between sine and cosine easily.
Performing Transformations
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Transformation Properties and Proofs
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Congruence
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Similarity
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Right Triangles & Trigonometry
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Analytic Geometry
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Conic Sections
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Circles
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