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Precalculus
Trigonometric Identities and Equations

1
Verifying Identities

Problem 1

Determine which of the following are identities. For those that are not an identity, give a value of \(x\) for which every term in the equation is defined but the equation does not hold. For those that are identities, verify the identity.
a. \(\sin x=1\)
b. \(\cot x \tan x=1\)

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Mr. Galletti
Mr. Galletti
Shelby
Shelby
Breylor
Breylor
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Julieta
Problem 2
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Shelby
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Breylor
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Problem 3
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Shelby
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Problem 4
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Shelby
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Problem 5
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Shelby
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Problem 6
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Shelby
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2
Sum and Difference Identities

Problem 1
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Shelby
Nathan
Nathan
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Problem 2
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Shelby
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Nathan
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Problem 3

Find the exact values of cos15 \(^{\circ}\) and tan 15 \(^{\circ}\) .

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Shelby
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Nathan
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Problem 4
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Shelby
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Nathan
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Problem 5
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Shelby
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Nathan
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Problem 6
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Shelby
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Nathan
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Problem 7
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Shelby
Nathan
Nathan
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Julieta

3
Multiple-Angle Identities; Sum and Product Identities

Problem 1
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Shelby
Shelby
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Breylor
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Problem 2
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Shelby
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Problem 3
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Shelby
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Problem 4
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Shelby
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Problem 5
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Shelby
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Problem 6
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Shelby
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4
Trigonometric Equations

Problem 1
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Gordon cc
Gordon
Ryan
Ryan
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Problem 2
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Gordon
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Shelby
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Problem 3
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Gordon
Stephanie
Stephanie
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Problem 4
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Gordon
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Shelby
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Problem 5
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Gordon cc
Gordon
Stephanie
Stephanie
Breylor
Breylor
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Shelby
Problem 6
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Shelby
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Breylor
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Problem 7
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Gordon cc
Gordon
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Shelby
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Problem 8
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Shelby
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Breylor
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Problem 9
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Shelby
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Problem 10
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Shelby
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