Trigonometry Quiz

By / January 16, 2026

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Question 1 of 10

1. Question

What is the value of tan(90°)?

0
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1
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Question 2 of 10

2. Question

Which identity relates sine, cosine, and tangent for an angle?

sin(a) = cos(a) * tan(a)
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tan(a) = sin(a) / cos(a)
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cos(a) = sin(a) * tan(a)
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Question 3 of 10

3. Question

What is the value of sin(30°)?

1/2
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√3/2
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1
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Question 4 of 10

4. Question

What is the period of the sine and cosine functions?

π
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2π
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4π
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Question 5 of 10

5. Question

According to the Pythagorean identity, which of the following is true?

sin²(a) + cos²(a) = 1
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tan²(a) + 1 = csc²(a)
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sin(a) * cos(a) = 1
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Question 6 of 10

6. Question

What is the double angle formula for sine?

sin(2a) = 2sin(a)cos(a)
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sin(2a) = sin²(a) – cos²(a)
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sin(2a) = 1 – 2sin²(a)
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Question 7 of 10

7. Question

For an angle a, which of these represents the tangent in terms of sine and cosine?

tan(a) = cos(a) / sin(a)
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tan(a) = sin²(a) + cos²(a)
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tan(a) = sin(a) / cos(a)
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Question 8 of 10

8. Question

Which formula represents the Law of Sines?

a/sin A = b/sin B = c/sin C
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a² + b² = c²
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cos A = b² + c² – a²
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Question 9 of 10

9. Question

What is the value of cos(45°)?

1/2
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√3/2
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√2/2
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Question 10 of 10

10. Question

Which trigonometric function is even?

sin(a)
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cos(a)
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tan(a)
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