Question

want full explanation​

Answer 1

Answer:

30 degree

Step-by-step explanation:

see O is a center of circle as well as 90 degree also.

so,

value of x will be

90० + x + x = 180०

90० + x square = 180

x square = 180 - 90

x square = 90

x = 90 ka root

x = 30

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