Grade 12IIT JEE Entrance Exam
THE AREA BOUNDED BY CIRCLES X2 +Y2=1 ,X2+Y2=4 AND PSL ROOT3 (X2 +Y2)=4XY IS
THE AREA BOUNDED BY CIRCLES X2 +Y2=1 ,X2+Y2=4 AND PSL ROOT3 (X2 +Y2)=4XY IS
1 Answer
Yash Baheti
Hi,
We know that two circles are concentric, so draw the figure, ull see that the area bounded is a disk.
Now draw the straight lines in the same figure, as the straight lines are passing through origin so if we draw them then the desired area is area of a part of disk.
That part will be substending an angle at centre ( origin ) which is also andle between pair of straight lines. So find the angle between PSL and than find the desired area.
We know that two circles are concentric, so draw the figure, ull see that the area bounded is a disk.
Now draw the straight lines in the same figure, as the straight lines are passing through origin so if we draw them then the desired area is area of a part of disk.
That part will be substending an angle at centre ( origin ) which is also andle between pair of straight lines. So find the angle between PSL and than find the desired area.
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