Trig Functions – Part 2

3

2

1Tangent & Cotangent Identities

Pythagorean Identities

Practice Problems

2

Tangent & Cotangent Identities

3

Pythagorean Identities

4

Signs of Trigonometric Functions

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Signs of Trigonometric FunctionsQuadrant Containin

g Q

Positive Functions Negative Functions

I All NoneII Sine, Cosecant Cosine, Secant, Tangent,

CotangentIII Tangent, Cotangent Sine, Cosecant, Cosine,

SecantIV 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 426

Problems 35-53 odd