Learning Objectives:

__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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