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2 years ago

Determine the measure of the indicated angle in the following triangle:

Mathematics

1 answer:

devlian [24]2 years ago

3 0

Answer:

Θ ≈ 58°

Step-by-step explanation:

using the Cosine Rule in the triangle

cosΘ = $\frac{80^2+60^2-70^2}{2(80)(60)}$ = $\frac{64000+3600-4900}{9600}$ = $\frac{5100}{9600}$ = $\frac{51}{96}$ , then

Θ = $cos^{-1}$ ( $\frac{51}{96}$ ) ≈ 58° ( to the nearest degree )

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Answer:

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Step-by-step explanation:

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4 years ago

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3 years ago

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Nana76 [90]

Answer:

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Step-by-step explanation:

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