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←DE→ is tangent to circle C at point D. What is the measure of ∠DEC?

Kakarot_15  Apr 13, 2017
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←DE→ is tangent to circle C at point D. What is the measure of ∠DEC?

 

∠DEC= 180°- 90° - 51° = 39°

 

laugh  !

asinus  Apr 13, 2017

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