InterviewSolution
Saved Bookmarks
| 1. |
IF thepairofstraightlinesxy- x -y +1=0 and thelinex +ay -3=0areconcurrentthen theacuteanglebetweenthe pairof linesax ^2- 13xy- 7y^2+ x+ 23y-6=0 is |
|
Answer» `cos ^(-1)((5)/(SQRT(218)))` |
|