/20 1234567891011121314151617181920 Oops! Time Up Trigonometry 1 / 20 1. In a right-angled triangle, if θ is an acute angle, then sin θ is always A) Undefined B) Less than 1 C) Greater than 1 D) Equal to 1 2 / 20 2. The tangent function (tan θ) is defined as A) Base / Hypotenuse B) Base / Perpendicular C) Perpendicular / Hypotenuse D) Perpendicular / Base 3 / 20 3. Which of the following is correct A) tan θ = sin θ / cos θ B) tan θ = sin²θ / cos²θ C) tan θ = cos²θ / sin²θ D) tan θ = cos θ / sin θ 4 / 20 4. The value of tan 45° is A) 1/2 B) 1 C) 0 D) 2 5 / 20 5. Trigonometry is the study of relationships between A) None of these B) Squares and rectangles C) Angles and sides of a triangle D) Angles and circles 6 / 20 6. The value of cot 90° is A) 1 B) Undefined C) √3/2 D) 0 7 / 20 7. The cosine function (cos θ) is defined as A) Perpendicular / Base B) Base / Hypotenuse C) Perpendicular / Hypotenuse D) Base / Perpendicular 8 / 20 8. The value of cos 60° is A) 3/2 B) 1/2 C) 0 D) 2 9 / 20 9. The value of cosec 45° is A) 0 B) √2 C) 2/3 D) 1 10 / 20 10. The reciprocal of tangent (tan θ) is A) Cotangent (cot θ) B) Cosecant (cosec θ) C) Sine (sin θ) D) Secant (sec θ) 11 / 20 11. The value of tan 0° is A) 0 B) 1 C) 2 D) 1/√3 12 / 20 12. The value of sin 30° is A) 1 B) 0 C) √3/2 D) 1/2 13 / 20 13. The reciprocal of sine (sin θ) is A) Secant (sec θ) B) Cosecant (cosec θ) C) Cotangent (cot θ) D) Cosine (cos θ) 14 / 20 14. In a right-angled triangle, the longest side is called A) Hypotenuse B) Perpendicular C) Base D) Median 15 / 20 15. The Pythagorean identity is A) sin²θ + cot²θ = 1 B) sin²θ + tan²θ = 1 C) sin²θ – cos²θ = 1 D) sin²θ + cos²θ = 1 16 / 20 16. The reciprocal of cosine (cos θ) is A) Tangent (tan θ) B) Cosecant (cosec θ) C) Secant (sec θ) D) Sine (sin θ) 17 / 20 17. The value of cos 0° is A) 1 B) 0 C) √3/2 D) 1/2 18 / 20 18. The value of sec 30° is A) 2 B) 0 C) 2/√3 D) 1 19 / 20 19. The value of sin 90° is A) 0 B) 1 C) √3/2 D) 1/2 20 / 20 20. The sine function (sin θ) is defined as A) Base / Perpendicular B) Perpendicular / Hypotenuse C) Perpendicular / Base D) Base / Hypotenuse Share Your Score with Friends Facebook Twitter Thanks! for your Feedback Send feedback
