AB is a diameter of a circle with centre...

AB is a diameter of a circle with centre O, and P is a point on the circle. If `angle POA = 130^@`, the `angle PBO` is equal to:
AB केंद्र O के साथ एक वृत्त पर एक व्यास है, और P वृत्त का एक बिंदु है। यदि `angle POA = 130^@`, तो `angle PBO` का मान ज्ञात करे|

`60^@`

`120^@`

`45^@`

`50^@`

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