BrainUp Kids
Question Paper
Class / Subject: Class 10 (CBSE) · Mathematics
Chapter: Chapter 8 — Chapter 8: Introduction to Trigonometry
Time Allowed: 15 minutes
Max Marks: 6
Instructions: All questions are compulsory. Each question carries 1 mark. Choose the correct option for each question.
1. sin θ is defined as: [1]
(A) opposite/hypotenuse
(B) adjacent/hypotenuse
(C) opposite/adjacent
(D) hypotenuse/opposite
2. In a right triangle, if the opposite side is 3 and hypotenuse is 5, sin θ equals: [1]
(A) 3/5
(B) 5/3
(C) 4/5
(D) 3/4
3. cot θ is the reciprocal of: [1]
(A) tan θ
(B) sin θ
(C) cos θ
(D) sec θ
4. sin²θ+cos²θ equals: [1]
(A) 1
(B) 0
(C) 2
(D) θ
5. The identity 1+tan²θ equals: [1]
(A) sec²θ
(B) cosec²θ
(C) cos²θ
(D) sin²θ
6. Given sin θ=3/5, find cos θ using the identity sin²θ+cos²θ=1: [1]
(A) 4/5
(B) 3/5
(C) 5/3
(D) 1/5