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

What type of triangles do you use the trig ratios with?

• any type
• right triangle
• obtuse triangle
• acute triangle

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

Find the missing length indicated. Leave your answer in simplest radical form.

• 60
• 100
• 80
• 20

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

True or False: When determining whether or not 3 side lengths form a right triangle, add the side lengths of the legs to see if the sum is equal to the length of the hypotenuse.

• true
• false

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

What is the length of y in this 45-45-90 triangle?

• 8√2
• 4√2
• 4
• 8

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

cotθ=

• cosθ/sinθ
• sinθ/cosθ
• tanθ
• 1/cosθ

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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 are x and y in this 30-60-90 triangle?

• x = 6 y = 3√3
• x = 3√2 y = 3
• x = 3√3 y = 6
• x = 6 y = 3√2

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

cos (π/2)

• 0
• √2/2
• 1/2
• 1

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

What is m∠LMO?
(Segment LO is a diameter of Circle P)

• 30°
• 45°
• 80°
• 90°

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

Choose the best match for the graph.

• 30^o
• 45^o
• 60^o
• 90^o

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