In the given figure, O is the centre of the circle and AB is the diameter. If ZLODA = 90' and OB= BC, find 21. a) 30° b) 45° c) 60 d) 70°

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In the given figure, O is the centre of the circle and AB is the diameter. If LODA = 90' and OB=
BC, find 41.
a) 30
b) 45
c) 60
d) 70
Transcribed Image Text:In the given figure, O is the centre of the circle and AB is the diameter. If LODA = 90' and OB= BC, find 41. a) 30 b) 45 c) 60 d) 70
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