
Ex 8.3
Ex 8.3, 1 (ii) Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 1 (iii) Deleted for CBSE Board 2022 Exams
Ex 8.3, 1 (iv) Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 2 (i) Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 2 (ii) Deleted for CBSE Board 2022 Exams
Ex 8.3, 3 Deleted for CBSE Board 2022 Exams You are here
Ex 8.3, 4 Deleted for CBSE Board 2022 Exams
Ex 8.3, 5 Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 6 Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 7 Deleted for CBSE Board 2022 Exams
Last updated at May 29, 2018 by Teachoo
Ex 8.3, 3 If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A. tan 2A = cot (A – 18°) cot (90 – 2A) = cot (A – 18°) Comparing angles 90 – 2A = A – 18 90 + 18 = A + 2 A 108 = 3 A 108/3= A 36 = A A = 36°