This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Mathematics > Some Applications Of Trigonometry > Class 10 Maths Chapter 9 Some Applications Of Trigonometry – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Maths Chapter 9 Some Applications Of Trigonometry Quiz 2 (8 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In a Fourier series, the fundamental frequency is also known as Period. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. A and B are two points. If the angle of elevation of B from A is 33$^\circ$, find the angle of depression of A from B. A) 67$^\circ$. B) 57$^\circ$. C) 33$^\circ$. D) 123$^\circ$. Show Answer Correct Answer: C) 33$^\circ$. 3. You're given all three sides of a triangle. What do you use to find an angle? A) Complementary Angles. B) Law of Cosines. C) SOH-CAH-TOA. D) Law of Sines. Show Answer Correct Answer: B) Law of Cosines. 4. The angle of elevation of the top a building from the foot of the tower is 30and the angle of elevation of the top of the tower from the foot of the building is 60. If the tower is 50 m high, then the height of the building is A) 50/root3. B) 50. C) 50root3. D) 50/3. Show Answer Correct Answer: D) 50/3. 5. The ratio in a right triangle of adjacent to hypotenuse is ..... A) Cosine. B) Inverse cosine. C) Sine. D) Tangent. Show Answer Correct Answer: A) Cosine. 6. The coefficients in a Fourier series represent: A) The time components of the periodic function. B) The frequency components of the periodic function. C) The phase components of the periodic function. D) The amplitude components of the periodic function. Show Answer Correct Answer: D) The amplitude components of the periodic function. 7. Say 'TRUE' or 'FALSE'If both the height of the pole and the distance of the point of observation from the foot are increased by the same length, the angle of elevation of its top remains unchanged A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 8. The angle formed by the line of sight with the horizontal when the point being viewed is above the horizontal level is called: A) VERTICALLY OPPOSITE ANGLE. B) ANGLE OF ELEVATION. C) COMPLEMENTARY ANGLE. D) ADJACENT ANGLE. Show Answer Correct Answer: B) ANGLE OF ELEVATION. ← PreviousRelated QuizzesMathematics QuizzesClass 10 QuizzesClass 10 Maths Chapter 9 Some Applications Of Trigonometry Quiz 1 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books