Question

Question 17 Evaluate the Given limit: lim(x--> 0) (cos(2x) - 1) / (cos (x) - 1)

Class XI - Limits and Derivatives Page 302

Answer 1

Here we will use the following formulas

cos²x + sin²x = 1
lim x→ 0 cosx = 1


I hope this will help you .

ask me if you will face any problem