Question

More geometry help please. If m of arc ac= 178°, and m of arc bc= 78°, what is m∠BDC?

Answer 1

If m of arc ac= 178°, and m of arc bc= 78°, what is m∠BDC?

Answer 2

picture?

Answer 3

yeah sorry https://media.glynlyon.com/g_geo_2012/12/img_geou12b_5.gif

Answer 4

This works just like your last one actually. See, your circle is broken into two arcs by the tangents.

Answer 5

oh ok great thanks

Answer 6

i get 128

Answer 7

Did you find half the difference?

Answer 8

m< BDC= (1/2) (178-78)

Answer 9

There you go.

m<BDC = (1/2)(100)