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Question -

In the given figure, X = 62º, XYZ = 54º. If YO and ZO are the bisectors of XYZ and XZY respectively of ΔXYZ, find OZY and YOZ.



Answer -

As the sum of all interiorangles of a triangle is 180º, therefore, for ΔXYZ,

X + XYZ + XZY =180º

62º + 54º+ XZY =180º

XZY = 180º − 116º

XZY = 64º

OZY = = 32º (OZ is the anglebisector of XZY)

Similarly,OYZ= = 27º

Usingangle sum property for ΔOYZ, we obtain

OYZ + YOZ + OZY =180º

27º + YOZ + 32º = 180º

YOZ = 180º − 59º

YOZ = 121º

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