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```
To remove xy term from the second degree equation 5x2+8xy+5y2+3x+2y+5=0,the coordinates axes are rotated through an angle∆,then ∆ equals to
To remove xy term from the second degree equation 5x2+8xy+5y2+3x+2y+5=0,the coordinates axes are rotated through an angle∆,then ∆ equals to

```
3 years ago

Arun
25768 Points
```							Dear Priti theta = 1/2 {tan-1 2h/(a-b)}                =1/2 {tan-1 8/5-5 }         =1/2 {tan-18/0}         =1/2 {pie/2}         =pie/4 Hope it helps Thanks and regards
```
7 months ago
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### Course Features

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