Search for: tan81∘−tan63∘−tan27∘+tan9∘ equals tan81∘−tan63∘−tan27∘+tan9∘ equals A6B0C2D4 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:tan81∘−tan63∘−tan27∘+tan9∘=tan81∘+tan9∘−tan63∘+tan27∘=sin81∘cos81∘+sin9∘cos9∘−sin63∘cos63∘+sin27∘cos27∘=sin81∘cos9∘+sin9∘cos81∘cos9∘cos81∘−sin63∘cos27∘+sin27∘cos63∘cos27∘cos63∘=sin81∘+9∘cos9∘cos90∘−9∘−sin63∘+27∘cos27∘cos90∘−27∘=sin90∘cos9∘sin9∘−sin90∘cos27∘sin27∘=1sin9∘cos9∘×22−1sin27∘cos27∘×22=2sin18∘−2sin54∘=2sin54∘−sin18∘sin18∘sin54∘=22cos36∘sin18∘sin18∘cos36∘=4 Related content CBSE Class 11 English Core Writing and Grammar – Tenses Worksheet Top 10 Maths Project for Class 6 Class 10 Maths MCQs How to Download NTA NEET Admit Card 2024 Rashi And Nakshatra Quiz CBSE MCQ for Class 10 Science Genes – Definition, Structure, Diagram and its Types Octal to Binary Converter Km to cm Conversion mm to km Conversion