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```
please find the principal and the general solution 2cos(2x)=1 find x

```
one year ago

Arun
25141 Points
```							Dear student 2 cos 2x = 1 cos 2x = ½ hence 2x = 2 n* pi ± pi/3 x = n* pi ± pi/6 hence principal solutions = pi/6 , 2pi/3
```
one year ago
TEJA KRISHNA
42 Points
```							2cos2X=1cos2X=1/2now from the formulae 2X= 2 n* pi ± pi/3x = n* pi ± pi/6principal solutions = pi/6 , 2pi/3
```
9 months ago
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### Course Features

• 31 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions