1. If sintheta = tfrac35 and theta is acute, then costheta =
- tfrac45
- tfrac34
- tfrac54
- tfrac25
Answer: A) tfrac45
Explanation: costheta= 1-sin^2theta= 1-tfrac925=tfrac45 (a 3-4-5 triangle).
MCQs / Mathematics / Trigonometry
Trigonometry MCQs — Mathematics
1 multiple-choice questions on Trigonometry from Mathematics, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.