trigonemtry

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13 Terms

1
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What is the exact value of sin 90°?

1

2
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What is the exact value of cos 180°?

-1

3
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What is the exact value of tan 270°?

Undefined

4
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What is the value of tan 150°?

-√3/3

5
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What is the value of cos 70°?

0.3420 (exact value not commonly used) or √(1-sin²70°) depending on method.

6
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What is the value of sin 240°?

-√3/2

7
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What is the value of cos 315°?

√2/2

8
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What is the value of sin 200°?

-√3/2

9
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What is the value of tan 115°?

-√3

10
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Find θ if cos θ = √3/2.

θ = 30° or 330°

11
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Find θ if tan θ = √3/3.

θ = 30° or 210°

12
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Find θ if sin θ = -√3/2.

θ = 240° or 300°

13
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Find θ if cos θ = -1.

θ = 180°