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Trig Functions – Part 2
3
2
1Tangent & Cotangent Identities
Pythagorean Identities
Practice Problems
2
Tangent & Cotangent Identities
3
Pythagorean Identities
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Signs of Trigonometric Functions
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Signs of Trigonometric FunctionsQuadrant Containin
g Q
Positive Functions Negative Functions
I All None
II Sine, Cosecant Cosine, Secant, Tangent, Cotangent
III Tangent, Cotangent Sine, Cosecant, Cosine, Secant
IV Cosine, Secant Sine, Cosecant, Tangent, Cotangent
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Example
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Another Example
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Proof Example
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Proof Example (Cont.)
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Verifying an Identity ExampleVerify the following identity by
transforming the left-hand side into the right-hand side.
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Verifying an Identity Example (Cont.)
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Practice Problems
Page 426Problems 35-53 odd
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