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Mathematics 13 Online
OpenStudy (anonymous):

In circle A shown below, m is 67° and m is 74°. What is m∡FDE? Answer 33.5° 37° 70.5° 74°

OpenStudy (anonymous):

Directrix (directrix):

70.5°

OpenStudy (anonymous):

This one stumped me. It has to factor into it the ratio of lengths of chords I think.

Directrix (directrix):

When two chords intersect within a circle, the measure of an angle formed is equal to 1/2 the sum of the measures of the arcs the angle and its verticall angles intercept.

OpenStudy (anonymous):

|dw:1330529157547:dw|

OpenStudy (anonymous):

Above is how I interpret the problem.

OpenStudy (anonymous):

|dw:1330529241999:dw|

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