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Sir/madam, how to prove that equation of a straight line joining s and r on circle x²+y²=a² are xcos(s+r/2)+ysin(s+r/2)=acos(s-r/2) where a is the radius of the circle.also give the theory part behind it because I didn't find the explanation anywhere.

Sir/madam, how to prove that equation of a straight line joining s and r on circle x²+y²=a² are 
xcos(s+r/2)+ysin(s+r/2)=acos(s-r/2) where a is the radius of the circle.also give the theory part behind it because I didn't find the explanation anywhere.

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

s and r are points or angles

Please write the question in a standard form or attach an image of the question

Regards

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