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Trigonometric Identities
Applications of trigonometric identities such as sin2θ+cos2θ=1, sin2θ=2sinθcosθ and more identities for HL students
Applications of trigonometric identities such as sin2θ+cos2θ=1, sin2θ=2sinθcosθ and more identities for HL students
No exercises available for this concept.
For any value of θ:
The double angle identity for sin states that
The double angle identity for cosine states that
These three different forms come from leveraging sin2θ+cos2θ=1.