

Ex 7.3
Ex 7.3, 2
Ex 7.3, 3 Important
Ex 7.3, 4 Important
Ex 7.3, 5
Ex 7.3, 6 Important
Ex 7.3, 7
Ex 7.3, 8
Ex 7.3, 9 Important
Ex 7.3, 10 Important
Ex 7.3, 11 You are here
Ex 7.3, 12
Ex 7.3, 13 Important
Ex 7.3, 14
Ex 7.3, 15
Ex 7.3, 16 Important
Ex 7.3, 17
Ex 7.3, 18 Important
Ex 7.3, 19 Important
Ex 7.3, 20 Important
Ex 7.3, 21
Ex 7.3, 22 Important
Ex 7.3, 23 (MCQ)
Ex 7.3, 24 (MCQ) Important
Ex 7.3, 11 cos 4 2 cos 4 2 = cos 2 2 2 = 1 + cos 4 2 2 = 1 4 1+ cos 4 2 = 1 4 1 2 + cos 4 2 +2 cos 4 1 = 1 4 1+ cos 2 4 +2 cos 4 = 1 4 1+ cos 8 + 1 2 +2 cos 4 = 1 4 1 + 1 2 cos 8 +1 +2 cos 4 = 1 4 1 + 1 2 cos 8 + 1 2 1 +2 cos 4 = 1 4 + 1 2 sin 8 8 + 1 2 +2 sin 4 4 + = 1 4 + 1 2 + 1 16 sin 8 + 1 2 sin 4 + = 1 4 3 2 + 1 16 sin 8 + 1 2 sin 4 + = + + +