In a circle with centre O, AD is a diame...

In a circle with centre O, AD is a diameter and AC is a chord. B is a point on AC, such that OB = 5 cm and `angle OBA= 60^@`. If `angle DOC= 60^@`, then what is the length of BC?
केंद्र O वाले एक वृत्त में, AD व्यास है तथा AC जीवा है | B, AC पर स्थित बिंदु है जो इस प्रकार है कि OB =5 सेमी तथा `angle OBA= 60^@` है | यदि `angle DOC= 60^@` है, तो BC की लंबाई ज्ञात करें |

4 cm

`3 sqrt5` cm

`5 sqrt3` cm

5 cm

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In a circle with centre O, AD is a diameter and AC is a chord. Point B on AC such that OB = 7cm and angle OBA = 60^@ . If angle DOC = 60^@ , then what is the length of BC? केंद्र वाले एक वृत्त में, AD एक व्यास है और AC एक जीवा है। AC पर एक बिंदु B इस प्रकार है की OB = 7 सेमी और angle OBA = 60^@ | यदि angle DOC = 60^@ है, तो BC की लंबाई क्या है?

In a circle with centre O, A diameter AB and a chord CD intersect each other at E, Ac and AD are joined. If angle BOC= 48^@ and angle AOD= 100^@ , then what is the measure of angle CEB ? केंद्र O वाले एक वृत्त में, व्यास AB तथा जीवा CD एक दूसरे को E पर काटते हैं | AC तथा AD को मिलाया जाता है | यदि angle BOC= 48^@ है और angle AOD= 100^@ है, तो angle CEB का मान ज्ञात करें |

In a circle with centre O, AB is a diameter and CD is a chord such that ABCD is a trapezium. If angle BAC= 28^@ ,then angle CAD is equal to: केंद्र O वाले एक वृत्त में, AB एक व्यास है तथा CD एक ऐसी जीवा है कि ABCD एक समलम्ब है | यदि angle BAC= 28^@ , है, तो कोण CAD ज्ञात करें |

In a circle with centre O, AB is the diameter and CD is a chord such that ABCD is a trapezium. If angle BAC= 40^@ ., then angle CAD is equal to: केंद्र O वाले एक वृत्त में, AB व्यास है और CD एक ऐसी जीवा है कि ABCD समलम्ब है | यदि angle BAC= 40^@ है, तो angle CAD ज्ञात करें|

In a circle with centre O, AB is the diameter and CD is a chord such that ABCD is a trapezium. If angle BAC = 25^@ , then angle CAD is equal to: केंद्र O वाले एक वृत्त में, AB व्यास है तथा CD एक ऐसी जीवा है कि ABCD एक समलम्ब बन जाता है | यदि angle BAC = 25^@ है, तो angle CAD का मान ज्ञात करें |

In a circle with centre O, AB is the diameter and CD is a chord such that ABCD is a trapezium. If angle BAC = 24^@ , then angle CAD is equal to: केंद्र O वाले एक वृत्त में, AB व्यास है तथा CD एक ऐसी जीवा है कि ABCD एक समलम्ब बन जाता है | यदि angle BAC = 24^@ है, तो angle CAD का मान ज्ञात करें |

In a circle with centre O, AB is the diameter and CD is a chord such that ABCD is a trapezium. If angle BAC=18^@ , then angle CAD is equal to: केंद्र O वाले एक वृत्त में, AB व्यास है तथा एक ऐसी जीवा है कि ABCD एक समलम्ब बन जाता है | यदि angle BAC=18^@ है, तो angle CAD का मान ज्ञात करें |

In a circle with centre O, ABDC is a cyclic quadrilateral with AB as a diameter of the circle. AC and BD produced meet at E. If angle CED=70^@ , then what is the measure of angle COD ? केंद्र O वाले एक वृत्त में, ABDC एक चक्रीय चतुर्भुज है जिसमें AB वृत्त का व्यास है| AC और BD को बढ़ाया गया है जो E पर मिलते हैं | यदि angle CED=70^@ है, तो angle COD का मान ज्ञात करें |

In a circle with centre O, BC is a chord. Point D and A are on the circle, on the opposite side of BC, such that angle DBC = 28^@ and BD=DC. What is the measure of angle BOC ? O केंद्र वाले एक वृत्त में, BC एक जीवा है। बिंदु D और A, वृत्त पर स्थित है जो BC के विपरीत है जैसे कि angle DBC = 28^@ और BD = DC। angle BOC का माप कया है

In a circle with centre O, a diameter AB and a chord CD intersect each other at E, AC and AD are joined. If angle BOC = 48^circ and angle AOD = 100^circ , then what is the measure of angle CEB? केंद्र O वाले किसी वृत्त में, व्यास AB और जीवा CD एक दूसरे को E पर काटते हैं, AC और AD को जोड़ा जाता है| अगर angle BOC = 48^circ और angle AOD = 100^circ है, तो angle CEB की माप क्या है?

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