CCSS.Math.Content.HSF.TF.A.3

What is the ratio for cosine?

• H/A
• O/A
• A/H
• A/O

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CCSS.Math.Content.HSF.TF.A.3

sin(7π/4)

• 1/2
• -√2/2
• √2/2
• -1/2

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CCSS.Math.Content.HSF.TF.A.3

tan 7π/4

• -1
• 1
• √2/2
• undefined

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CCSS.Math.Content.HSF.TF.A.3

I have been given the short leg in this 30-60-90 triangle.  How do I find the length of the hypotenuse?

• Multiply 4 by 2
• Multiply 4 by √3
• Multiply 4 by √2
• Divide 4 by √3

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CCSS.Math.Content.HSF.TF.A.3

Fill in the blank...
SOH ___ TOA

• COH
• CAH
• COA
• CHA

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CCSS.Math.Content.HSF.TF.A.3

What is the exact value of cos 315°

• -√2/2
• √2/2
• 1/2
• √3/2

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CCSS.Math.Content.HSF.TF.A.3

What type of special right triangle is this?

• Isoceles right
• 30-60-90
• not a special right triangle

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CCSS.Math.Content.HSF.TF.A.3

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.Math.Content.HSF.TF.A.3

Find the value of x.

• 18
• 18√3
• 36√3
• 12

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CCSS.Math.Content.HSF.TF.A.3

arccos(cos 5π/4)

• 3π/4
• 2π/3
• 5π/4
• -4π/5

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CCSS.Math.Content.HSF.TF.A.3