Question

which formula can be used to find the measure of angle a. 1/2(a°+b°) b. 1/2(a°-c°) c. 1/2(b°+c°) d. 1/2(a°-b°)

Answer 1

d

Explanation:

The secant- secant angle 1 is one half the difference of the measures of the intercepted arcs, that is

∠ 1 =
`(1)/(2)`(a - b)°