2. Basic Identities Trigonometric Identities Section 3.1
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3. Reciprocal Identities
The following equations are identities:
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4. Tangent and Cotangent in Terms of Sine and Cosine
The following equations are identities:
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5. Pythagorean Identities
The following equations are identities:
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6. Odd and Even Identities
Figure 3.4
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