Math, asked by gedamsakshi119, 3 months ago

in a circle chord xyll chord kL also chord xy ~= chord kL .if chord kL is at a distance of 4.2 cm then find the distance between two chords

Answers

Answered by amitnrw
2

Given :  xy || kL

xy ≅ kL

chord kL is at a distance of 4.2 cm

To Find:    the distance between two chords

Solution:

chord kL is at a distance of 4.2 cm

Let say  OM ⊥ kL

then OM = 4.2 cm   perpendicular form center on chord bisect it

OM² = radius²  - (kL/2)²

4.2²   = radius²  -   (kL/2)²

Draw ON ⊥ xy

ON²  = radius² - (xy/2)²

xy = kL

=> xy/2 = kL/2

=> ON²   = 4.2²

=> ON =  ±4.2

Distance between chords = OM + ON

= 4.2 ± 4.2

=  8.4 cm  or  0 cm

0 cm means xy & kL are same chord

hence 8.4 cm  is the distance between two chords

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