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In a cyclic quadrilateral ABCD, it is gi...

In a cyclic quadrilateral ABCD, it is given :
`angleA=(x+y+10)^(@), angleB=(y+20)^(@), angleC=(x+y-30)^(@)" and "angleD=(x+y)^(@)`. Find `angleB`.

A

`70^@`

B

`80^@`

C

`100^@`

D

`110^@`

Text Solution

Verified by Experts

The correct Answer is:
B
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