The circumference of a circle, with centre O, is divided into three arcs APB, BQC and CRA such that : `(arc APB)/(2)= (arc BQC)/(3) =(arc CRA)/(4)` Find `angleBOC`.

The magnetic field at centre O of the arc in Fig.

In the circle with center O, OD=BD and arc DB=2pi . What is the area of the circle?

In the given figure, O is the centre of the circle and the length of arc AB is twice the length of arc BC. if angleAOB =100^(@) find angleBOC

The circle above with center O has a circumference of 36. What is the length of minor arc AB^(frown)

In the figure abvoe, aB is the arc of a circle with centre O. If the length of arc AB is 4pi , what is the area of region OAB to the nearest tenth?

BC is a chord with centre O. A is a point on an arc BC . Prove that: ∠BAC+∠OBC= 90 , if A is the point on the major arc.

Write the truth value (T/F) of the following with suitable reasons: A circle is a plane figure. Line segment joining the centre to any point on the circle is a radius of the circle. If a circle is divided into three equal arcs each is a major arc. A circle has only finite number of equal chords. A chord of a circle, which is twice as long is its radius is a diameter of the circle. Sector is the region between the chord and its corresponding arc. The degree measure of an arc is the complement of the central angle containing the arc. The degree measure of a semi-circle is 180^0

The radius of a circle is 3.6 cm. Find the length of the arc of the sector with central angle 36^(@)

In the given circle. Arc APB and are BQC are in the ratio 2: 5 and O is centre of the circle. If angle AOB = 44^(@) : Find angle AOC.

In the given figure, lengths of arcs APB and BQC are in the ratio 5:3 and angle AOC = 152 ^(@), find angle ACB and angle BAC.