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In a cyclic quadrilateral A B C D , if...

In a cyclic quadrilateral `A B C D` , if `/_A=3 /_C)`. Find `/_A`

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In a cyclic quadrilateral,sum of opposite angles is `180^0`
`/_A+/_C=180^0`
`=>/_A+/_A/3=180^0`
`4/3/_A=180 ^0`
`/_A=135^0`
Hence the answer is `135^0`
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