Question

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Answer 1

Answer:

ans 1 is your ans.....

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Answer 2

Answer:

the angle subtended at the centre is 360/n

n= 8

the angle subtended at the centre is 45

to get the same arc where X angle lies , we should find the angle at centre for the same arc

so it would be 45+45+45= 135

now angle subtended at the centre is twice the angle subtended at circumference

so angle X = 135/2= 67.5

so it's answer no.4