In the given circle with center O two chords AB and CD are drawn. If OM and ON are perpendiculars from O to AB and CD respectively such that OM > ON and AB and CD intersected at point P, then
Answers
Given : a circle with center O, two chords AB and CD are drawn which intersect at P . OM and ON ate perpendiculars from O to AB and CD respectively such that OM is greater than ON and AB and CD intersected at point P
To Find : which is true
1.angle PMN = angle PNM
2.angle PMN is greater than anglePNM
3.angle PNM is greater than angle PMN
4.angle POM=angle PON
Solution:
OM & ON are perpendicular on AB & CD
Hence ΔPMO & ΔPNO are right angle triangles
OP = OP ( hypotenuse common in both )
OM > ON ( given )
PM² = OP² - OM²
PN² = OP² - ON²
=> PM² < PN²
=> PM < PN
in ΔPMN
PM < PN
=> ∠PNM < ∠PMN
=> ∠PMN > ∠PNM
Option 2 is correct :
.angle PMN is greater than anglePNM
angle POM=angle PON not possible
as Cos∠POM = OM/OP & Cos∠PON = ON/OP
OM > ON
=> Cos∠POM > Cos∠PON
=> ∠POM < ∠PON
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