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

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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°

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asinus Apr 13, 2017

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