Question

10. In the figure, if O is the centre of the circle, then the measure of x is​

Answer 1

Answer:

then the value of x =

the centre of the circle is double the angle at 40 degrees

so o angle =80 degrees

the sum of three angles of a triangle =180 degrees

angle a= angle b

there fore x=100 degrees

Answer 2

Answer:

As O is the centre of the circle, AB is the diameter, which can be easily seen from the figure and therefore ∠ACB is a semicircular angle. As we know Semicircular Angles are always Right angles. ∴ The value of x∘ in the following figure is 50∘

so x =50°

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