TEKS.MATH.9-12.III.A.3

sin 2π/3

• 1/2
• -1/2
• √3/2
• -√3/2

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TEKS.MATH.9-12.III.A.3

Find side length X.

• 30
• 25
• 15
• 40

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TEKS.MATH.9-12.III.A.3

In this 45-45-90 triangle, I have been given the length of a leg.  How do I find the length of the hypotenuse?

• It is the same length as the given leg.
• Multiply that leg's length by √2.
• Multiply that leg's length by 2.
• Divide that leg's length by √2.

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TEKS.MATH.9-12.III.A.3

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

• Multiply 7 by 2
• Multiply 7 by √3
• Divide 7 by 2
• Divide 7 by √3

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TEKS.MATH.9-12.III.A.3

If you are given the opposite side and hypotenuse, which trig function should you use?

• sine
• cosine
• tangent

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TEKS.MATH.9-12.III.A.3

To measure the distance across a pond, a surveyor locates points A, B, C, D, and E as shown.  What is AB to the nearest meter?

• 10
• 12
• 15
• 18

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TEKS.MATH.9-12.III.A.3

What is the ratio for Cosine?

• Opp/Hyp
• Opp/Adj
• Adj/Opp
• Adj/Hyp

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TEKS.MATH.9-12.III.A.3

What is the ratio for Sine?

• Hyp/Opp
• Opp/Hyp
• Opp/Adj
• Adj/Opp

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TEKS.MATH.9-12.III.A.3

sin(π/2)

• 1
• 0
• -1
• √2/2

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TEKS.MATH.9-12.III.A.3

cos^-1(√3/2) = 

• π/3
• 2π/3
• π/6
• 5π/6

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TEKS.MATH.9-12.III.A.3