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in Mathematics by (45.9k points)
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दी गई आकृति में, केंद्र वाले वृत्त की एक स्पर्श-रेखा PT यदि इस प्रकार है कि \(\angle TPO = 35^\circ\), तो \(\angle x\) की माप है:

PT is a tangent to a circle with centre O

(A) 110°

(B) 115°

(C) 120°

(D) 125°

1 Answer

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सही विकल्प है (D) 125°

चूँकि स्पर्शरेखा, संपर्क बिंदु पर त्रिज्या के लंबवत है, हमारे पास है:

\(\angle PTO = 90^\circ\)

इसलिए त्रिभुज OTP पर लागू बाहरी कोण सूत्र से, हमें मिलता है:

\(x = 90^\circ + 35^\circ\).

\(=125^\circ\)

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