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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ९

In the given figure, ∠A = 64°, ∠ABC = 58°. If BO and CO are the bisectors of ∠ABC and ∠ACB respectively of ΔABC, find x° and y° - Mathematics

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प्रश्न

In the given figure, ∠A = 64°, ∠ABC = 58°. If BO and CO are the bisectors of ∠ABC and ∠ACB respectively of ΔABC, find x° and y°

बेरीज

उत्तर

In the given ΔABC

∠A = 64° and ∠B = 58°

∠C = 180° − (64° + 58°)

= 180° – 122°

= 58°

Since OC is the bisector of ∠C

y = `(58^circ)/2`

= 29°

Given ΔOBC

∠OCB = `(58^circ)/2` = 29°

∠OCB = 29°

∴ ∠BOC = 180° − (29° + 29°)

x = 180° – 58°

x = 122°

∠x = 122° and ∠y = 29°.

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पाठ 4: Geometry - Exercise 4.2 [पृष्ठ १५८]

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सामाचीर कलवी Mathematics [English] Class 9 TN Board
पाठ 4 Geometry
Exercise 4.2 | Q 8 | पृष्ठ १५८
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