Question

$li{m}_{x\to 0}$ $\frac{1-cos2x}{x}$
[MMR 1983]

• A. 0
• B. 1
• C. 2
• D. 4

Answer 1

The correct option is A

0

$li{m}_{x\to 0}$$\frac{x\times \left({2sinx}^2\right)}{\left(x^2\right)}$ = 2 $li{m}_{x\to 0}$ ${\left(\frac{sinx}{x}\right)}^2$ × $li{m}_{x\to 0}$ x =0