Search for: If θ∈[4π,5π], then cos−1(cosθ) equals If θ∈[4π,5π], then cos−1(cosθ) equals A-4 π+θB5 π-θC4 π-θDθ-5π Fill Out the Form for Expert Academic Guidance!l Grade ---Class 1Class 2Class 3Class 4Class 5Class 6Class 7Class 8Class 9Class 10Class 11Class 12 Target Exam JEENEETCBSE +91 Preferred time slot for the call ---9 am10 am11 am12 pm1 pm2 pm3 pm4 pm5 pm6 pm7 pm8pm9 pm10pm Please indicate your interest Live ClassesBooksTest SeriesSelf Learning Language ---EnglishHindiMarathiTamilTeluguMalayalam Are you a Sri Chaitanya student? NoYes Verify OTP Code (required) I agree to the terms and conditions and privacy policy. Solution:We have, θ∈[4π,5π]⇒−4π+θ∈[0,π]Also, cos(−4π+θ)=cos(4π−θ)=cosθ∴ cos−1(cosθ)=cos−1{cos(−4π+θ)ξ=−4π+θ Related content CBSE Class 6 Science Chapter 1 Components of Food MCQ Questions with Answers Mother’s Day Quiz with Answers CBSE Class 9 History Chapter 1 MCQ Class 10 Science MCQ Chapter 3 Metals and Non-Metals How to Crack NEET in Drop Year? CBSE Class 9 Social Science MCQ CBSE Class 10 Science MCQs Chapter 2 Acids Bases and Salts CBSE Class 10 Science MCQs Chapter 1 Chemical Reactions and Equations with Answers How to Convert CGPA into Percentage CBSE Class 6 MCQs for All Subjects with Answers