
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
Ex 8.3, 4 Deleted for CBSE Board 2022 Exams
Ex 8.3, 5 Important Deleted for CBSE Board 2022 Exams You are here
Ex 8.3, 6 Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 7 Deleted for CBSE Board 2022 Exams
Last updated at July 16, 2019 by Teachoo
Ex 8.3 ,5 If sec 4A = cosec (A – 20°), where 4A is an acute angle, find the value of A. sec 4A = cosec (A – 20°) cosec (90 – 4A) = cosec (A – 20°) Comparing angles 90 – 4A = A – 20 – 4A – A = – 20 – 90 – 5A = –110 A = (− 110)/(− 5) A = 22°