PLEASE HELP!!!! What is the measure of angle BCD

Mathematics

1 answer:

faust18 [17]3 years ago

3 0

Answer:

82° because

98° + 70° = 168°

360° - 168° = 192°

192° is for two angles, so it can't be 192°, 220°

it's not VERY obtuse angle. So it remains only 82°

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4 years ago

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Answer:

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Step-by-step explanation:

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4 years ago

PLEASE SHOW WORK OR EXPLAIN

Ganezh [65]

Answer:

Step-by-step explanation:

$cosine=\dfrac{adjacent}{hypotenuse}\\\\adjacent=BC\\hypotenuse=AB\\\\\cos B=\dfrac{BC}{AB}\\\\\angle B\cong\angle D,\ \text{therefore}\ \cos B=\cos D.\\\\adjacent=ED\\hypotenuse=AD\\\\\cos B=\cos D=\dfrac{ED}{AD}$