Pre-Calc Quiz 7: Unit Circle Intro

Evaluate cos(225°)

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CCSS.HSF.TF.A.2

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CCSS.HSF.TF.A.2

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CCSS.HSF.TF.A.2

What is the radius of a unit circle?

• 1
• 2
• 1/2
• 0

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CCSS.HSF.TF.A.2

tanθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

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CCSS.HSF.TF.A.2

What is the exact coordinates of  3π/4 on the unit circle?

• (−√2∕2, √2∕2)
• (−√2∕2, −√2∕2)
• (−√3∕2, −√2∕2)
• (√2∕2, −√2∕2)

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CCSS.HSF.TF.A.2

What is the value of cosine at 315

• 0
• 1
• √2 / 2
• -√2 /2

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CCSS.HSF.TF.A.2

cos(π)=

• 0
• 1
• -1
• 1/2

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CCSS.HSF.TF.A.2

Identify the Positive angle in both radians and degrees that represent point H.

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CCSS.HSF.TF.A.2

Name the angle indicated by the graph in both radians and degrees.

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CCSS.HSF.TF.A.2