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```				   i  just wana know  proof of angle of intersection of two circle
in cordinate geometry ..........interms of cosine angle
```

6 years ago

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```
at first find the point of intersection of curves....let it be A..
now make a tangent to the curve separately at this point ...
there will be 2 tangents with different slopes...let slope of tangents are
m1,m2 respectively...
then we have
tan@=m2-m1/1+m1m2
@ is the angle bw tangents and it is called angle of intersection of two curves.....

sec2@ =(1+tan2 @)
from here calculate cos@
```
6 years ago

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