 ## Tutoring on Half Angle Trigonometric Identities

Learning Objectives:

#### Understand and Apply Half Angle Trigonometric Identities.

Math Tutoring on Half Angle Trigonometric Identities

Half Angle Identities for Cosine: Half Angle Identities for Sine: Half Angle Identities for Tangent:   We can see in math tutoring, that each of the Half Angle Identity, the answer appears to have two values- one positive and one negative (see the ‘±’ in front of the radicals).

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Hook Questions:

1.    Deduce Half Angle Identities of Tangent with the help of Double Angle Identities.

2.    Why each of the Half Angle Identities has two values (±)?

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