To find the measure of angle 1 we have to apply circle theorem.
The correct formula to find the measure of angle 1 is One-half(a° – b°).
Given:
Find the measure of angle 1.
What is the circle theorem?
As per the circle theorem, the angle of vertex of a circle equal to half of the difference of the intercepted arc.
- The angle at the vertex is [tex]\angle 1[/tex]
- The intercepted angle are [tex]\angle a[/tex] and [tex]\angle b[/tex].
Thus, the correct formula to find the measure of angle 1 is One-half(a° – b°).
Learn more about circle theorem here:
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