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brilliants [131]
4 years ago
13

Cos(x+pi) = 1/2 over the interval [pi/2, pi]

Mathematics
2 answers:
Neporo4naja [7]4 years ago
8 0

Answer: B

Step-by-step explanation:

valkas [14]4 years ago
3 0

Answer:B

Step-by-step explanation:

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Given:

In triangle GHI, h = 300 inches, G=30° and H=29º.

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We have, G=30° and H=29º.

Using angle sum property, we get

m\angle G+m\angle H+m\angle I=180^\circ

30^\circ+29^\circ+m\angle I=180^\circ

59^\circ+m\angle I=180^\circ

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According to Law of sines,

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

Using Law of sines, we get

\dfrac{h}{\sin H}=\dfrac{i}{\sin I}

\dfrac{300}{\sin 29^\circ}=\dfrac{i}{\sin 121^\circ}

\dfrac{300}{0.4848}=\dfrac{i}{0.8572}

Multiply both sides by 0.8572.

\dfrac{300}{0.4848}\times 0.8572=i

530.44554=i

i\approx 530

Therefore, the length of i is about 530 inches.

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