Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Ex 8.3
Ex 8.3, 2 Important
Ex 8.3, 3 (i) [MCQ]
Ex 8.3, 3 (ii) [MCQ] Important
Ex 8.3, 3 (iii) [MCQ] Important
Ex 8.3, 3 (iv) [MCQ]
Ex 8.3, 4 (i) Important
Ex 8.3, 4 (ii)
Ex 8.3, 4 (iii) Important
Ex 8.3, 4 (iv) Important
Ex 8.3, 4 (v) Important
Ex 8.3, 4 (vi)
Ex 8.3, 4 (vii) Important
Ex 8.3, 4 (viii)
Ex 8.3, 4 (ix) Important
Ex 8.3, 4 (x)
Question 1 (i) Important Deleted for CBSE Board 2024 Exams
Question 1 (ii) Deleted for CBSE Board 2024 Exams You are here
Last updated at May 29, 2023 by Teachoo
Ex 8.3, 3 Evaluate : sin 25 cos 65 + cos 25 sin 65 sin 25 cos 65 + cos 25 sin 65 = sin (90 65) cos 65 + cos (90 65) sin 65 = cos 65 cos 65 + sin 65 sin 65 = cos265 + sin265 = 1 Hence, sin65 cos 65 + cos 25 sin 65 = 1