Based on the markings in the diagram, which conclusion must be true?

Mathematics

2 answers:

Yakvenalex [24]2 years ago

6 0

The correct answer is B) AC = BC
We know this because the two triangles are equal due to SAS

allochka39001 [22]2 years ago

6 0

The answer is b

I hope that helped

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A circle with a area 9 pie has a sector with a central angle of 60 degrees

goldfiish [28.3K]

Answer:

4.71 square units

Step-by-step explanation:

$central \: \angle \: ( \theta) = 60 \degree \\ \\ area \: of \: sector \\ = \frac{\theta}{360 \degree } \times area \: of \: circle \\ \\ = \frac{60 \degree }{360 \degree } \times 9\pi \\ \\ = \frac{1}{6} \times 9\pi \\ \\ = 1.5\pi \\ = 1.5 \times 3.14 \\ = 4.71 \: {units}^{2} \\ \\ \red{ \bold{ area \: of \: sector = 4.71\: {units}^{2} }} \\$