C-08-Q224: With $\angle BAC = 60^{\circ}$ for tangents $AB,AC$ and centre $O$, $\… | প্রশ্ন করি

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C-08-Q224mediumsingle_mcq

With $\angle BAC = 60^{\circ}$ for tangents $AB,AC$ and centre $O$ , $\angle BOC$ equals—

a $300^{\circ}$
b $270^{\circ}$
c

ব্যাখ্যা

A tangent is perpendicular to the radius at the point of contact, so $\angle OBA = \angle OCA = 90^{\circ}$ . In quadrilateral $OBAC$ the angles sum to , giving .

224/231

এই অধ্যায়ের আরও প্রশ্ন

C-08-Q225With the same configuration and the midpoint of arc , which of the following are correct? (i) , (ii) is FALSE
C-08-Q226In the creative question, and are equal chords of circle with centre . From the centre, perpendiculars to thes
C-08-Q227In the same setup, the foot of the perpendicular from to is—
C-08-Q228In a circle with centre and chord cm, if the perpendicular from has cm, then the radius equals—
C-08-Q229In a cyclic quadrilateral , if side is extended to a point so that an exterior angle is formed, then (i.e. the
C-08-Q230To find the centre of an arc drawn with radius cm, one draws perpendicular bisectors of two chords of the arc
C-08-Q231In a circle with centre , inscribed angles and standing on arc satisfy—
C-08-Q221With the same setup, equals—
C-08-Q222

120^{\circ}

12 0^{\circ}

90^{\circ}

360^{\circ}

\angle BOC = 360^{\circ} - 90^{\circ} - 90^{\circ} - 60^{\circ} = 120^{\circ}

Again with the same setup, the four points are—

C-08-Q223In the sample MCQ, with centre and the given figure, the angle on the circumference standing on a central angl

Circle — সব প্রশ্ন দেখুন (231টি) →

With ∠BAC=60∘\angle BAC = 60^{\circ}∠BAC=60∘ for tangents AB,ACAB,ACAB,AC and centre OOO, ∠BOC\angle BOC∠BOC equals—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

With $\angle BAC = 60^{\circ}$ for tangents $AB,AC$ and centre $O$ , $\angle BOC$ equals—