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2 years ago

What type of angle is ∠DEA ? straight acute obtuse right

Mathematics

2 answers:

solmaris [256]2 years ago

7 0

Answer:

C. Obtuse.

Step-by-step explanation:

We have been given a diagram. We are asked to find the type of angle DEA.

We can see that angle DEA and angle CEA forms a linear pair of angle, so they are supplementary. We can represent this information in an equation as:

$m\angle DEA+m\angle CEA=180^{\circ}$

$m\angle DEA+77^{\circ}=180^{\circ}$

$m\angle DEA+77^{\circ}-77^{\circ}=180^{\circ}-77^{\circ}$

$m\angle DEA=103^{\circ}$

Since measure of angle DEA is 103 degrees, therefore, angle DEA is an obtuse angle.

Katena32 [7]2 years ago

6 0

Below is my answer :)

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Step-by-step explanation:

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First of all, we have to find the common difference

$here\\a_1 = \frac{5}{6}\\a_2 = \frac{2}{3}\\a_3 = \frac{1}{2}\\a_4 = \frac{1}{3}\\d = a_2-a_1 = \frac{2}{3} -\frac{5}{6} = \frac{4-5}{6} = -\frac{1}{6}\\d = a_3 - a_2 = \frac{1}{2} - \frac{2}{3} = \frac{3-4}{6} = =\frac{1}{6}$

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Keywords: Arithmetic sequence, common difference

Learn more about arithmetic sequence at:

#LearnwithBrainly

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3 years ago

What type of angle is ​ ∠DEA ​ ? straight acute obtuse right

What type of angle is ∠DEA ? straight acute obtuse right