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Mathematics 13 Online
zarkam21 (zarkam21):

This would be 360-142?

zarkam21 (zarkam21):

OpenStudy (welshfella):

that's for sure!!

OpenStudy (welshfella):

Hint: < CAB is congruent to < CDA

zarkam21 (zarkam21):

soo

zarkam21 (zarkam21):

142

OpenStudy (welshfella):

so what is the measure of < CDA given that the arc CA = 142 degrees?

zarkam21 (zarkam21):

360-142?

OpenStudy (welshfella):

the central angle is equal to the arc AC and < CDA = half this central angle

OpenStudy (welshfella):

|dw:1466103165142:dw|

zarkam21 (zarkam21):

so 142/2

zarkam21 (zarkam21):

142*2

OpenStudy (welshfella):

right

OpenStudy (welshfella):

|dw:1466103261529:dw|

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