Ex 8.2, 4 (iii) - Chapter 8 Class 10 Introduction to Trignometry
Last updated at April 16, 2024 by Teachoo
Ex 8.2
Ex 8.2, 1 (i)
Ex 8.2, 1 (ii)
Ex 8.2, 1 (iii)
Ex 8.2, 1 (iv) Important
Ex 8.2, 1 (v) Important
Ex 8.2, 2 (i) (MCQ)
Ex 8.2, 2 (ii) (MCQ)
Ex 8.2, 2 (iii) (MCQ) Important
Ex 8.2, 2 (iv) (MCQ)
Ex 8.2, 3 Important
Ex 8.2, 4 (i) Important
Ex 8.2, 4 (ii) Important
Ex 8.2, 4 (iii) You are here
Ex 8.2, 4 (iv)
Ex 8.2, 4 (v) Important
Transcript
Ex 8.2, 4 State whether the following are true or false. Justify your answer. (iii) The value of cos θ increases as θ increases. We know that cos 0° = 1 cos 30° = √3/2 = 1.73/2 = 0.865 cos 45° = 1/√2 = 1/1.414 = 0.707 cos 60° = 1/2 = 0.5 cos 90° = 0 Thus, value of cos θ decreases as θ increases So, the given statement is false
