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In Fig. 10.36, A,B and C are three po...

In Fig. 10.36, A,B and C are three points on a circle with centre O such that `\ /_B O C"\ "="\ "30o` and `\ /_A O B"\ "="\ "60o` . If D is a point on the circle other than the arc ABC, find `/_A D Cdot`

Answer

Step by step text solution for In Fig. 10.36, A,B and C are three points on a circle with centre O such that \ /_B O C"\ "="\ "30o and \ /_A O B"\ "="\ "60o . If D is a point on the circle other than the arc ABC, find /_A D Cdot by MATHS experts to help you in doubts & scoring excellent marks in Class 9 exams.

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In Fig. 10.36, A,B and C are three points on a circle with centre O such that /_B O C""=" "30^o and /_A O B" "=" "60^o . If D is a point on the circle other than the arc ABC, find /_A D Cdot

In Fig. 10.37, /_P Q R" "=" "100o , where P, Q and R are points on a circle with centre O. Find /_O P Rdot

Knowledge Check

  • A, B and C are three points on a circle with centre O. The tangent at C meets BA produced to T. If /_ATC = 30^@ and /_ACT = 48^@ , then what is the value of /_AOB ?

    A
    `78^@`
    B
    `96^@`
    C
    `102^@`
    D
    `108^@`

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    In the adjoining figure, A,B and C are three points on a circle with centre O such that mangleAOB=110^@ , mangleAOC=120^@ . Find mangleBAC .

    In the given figure O is the centre of circle and angle BOC = 30^(@) , angle AOB = 60^(@) If there is a point D on the circle, not on arc ABC, then find angle ADC

    In Fig.10.96 ,if TP and TQ are tangents drawn from an external points T to a circle with centre O such that /_TQP=60o ,then /_OPQ=( FIGURE) 25o (b) 30o (c) 40o (d) 60o

    In Fig.10.52,PQ is tangent at a point R of the circle with centre O. If /_TRQ=30o , find m/_PRS .(FIGURE)

    In Fig.10.101,PQ and PR are two tangents to a circle with centre O. If /_QPR=460 then /_QOR equals (FIGURE) 67o (b) 134o (c) 44o ( ) 46o

    If A B , B C a n d C D are equal chords of a circle with O as centre and A D diameter, then /_A O B= 60^0 (b) 90^0 (c) 120^0 (d) none of these

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