3 years ago

(-0.42,0.91)

1 answer:

3 0

Answer:

$\cos(\pi -\theta) = 0.42$

$\cos(2\pi +\theta) = -0.42$

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Finger [1]

Answer:

SAS

Step-by-step explanation:

We must prove that triangles ABC and EDC are congruent.

Since BD bisects AE, then AC is congruent with CE.

Since AE bisects BD, then BC is congruent with CD

Angle C is 90° in the triangle EDC and is also 90° in triangle BCA because they are vertical angles.

Being two sides and the included angle congruent, then both triangles are similar by the SAS theorem.

Answer: SAS

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