Double Angle Trigonometric Identities

Double Angle Trigonometric Identities

Learning Objectives:

Understand and Apply Double Angle Trigonometric Identities

Math Tutoring on Double Angle Trigonometric Identities

Double Angle Identities of Sine:

Double Angle Identities of Cosine:

Double Angle Identities of Tangent in Math Tutoring:

 

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Hook Questions:

1.   Prove that cos(2A) = cos2A – sin2A.

2.   Deduce cot(2A) with the help of Double Angle Identities of Cosine and Sine.

 

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