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Let alpha chord of a circle be that chor...

Let `alpha` chord of a circle be that chord of the circle which subtends an angle `alpha` at the center.
If `x+y=1` is a chord of `x^(2)+y^(2)=1`, then `alpha` is equal to

A

`pi //4`

B

`pi//2`

C

`pi//6`

D

`x+y=1` is not a chord

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CENGAGE ENGLISH-CIRCLE -For Problems
  1. To the circle x^(2)+y^(2)=4, two tangents are drawn from P(-4,0), whic...

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  2. To the circle x^(2)+y^(2)=4, two tangents are drawn from P(-4,0), whic...

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  3. Let alpha chord of a circle be that chord of the circle which subtends...

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  4. If alpha- chord of a circle be that chord which subtends an angle alph...

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  5. If alpha- chord of a circle be that chord which subtends an angle alph...

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  6. Two variable chords AB and BC of a circle x^(2)+y^(2)=a^(2) are such t...

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  7. Two variable chords AB and BC of a circle x^(2)+y^(2)=a^(2) are such t...

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  8. Two variable chords AB and BC of a circle x^(2)+y^(2)=a^(2) are such t...

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  9. Given two circles intersecting orthogonally having the length of commo...

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  10. Given two circles intersecting orthogonally having the length of commo...

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  11. Given two circles intersecting orthogonally having the length of commo...

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  12. In the given figure, there are two circles with centers A and B. The c...

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  13. In the given figure, there are two circles with centers A and B. The c...

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  14. In the given figure, there are two circles with centers A and B. The c...

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  15. Let the circles S(1)-=x^(2)+y^(2)+4y-1=0 S(2)-= x^(2)+y^(2)+6x+y+8...

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  16. Let each of the circles S(1)-=x^(2)+y^(2)+4y-1=0 S(1)-= x^(2)+y^(2...

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  17. Let each of the circles S(1)-=x^(2)+y^(2)+4y-1=0 S(1)-= x^(2)+y^(2...

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  18. The line x+2y+a=0 intersects the circle x^(2)+y^(2)-4=0 at two distin...

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  19. The line x + 2y = a intersects the circle x^2 + y^2 = 4 at two distinc...

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  20. Let A,B, and C be three sets such that A={(x,y)|(x)/(cos theta)=(y)/...

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