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Liono4ka [1.6K]
3 years ago
12

in a triangle PQR, p=7.5cm, q=10cm, r=9.1cm. find the largest angle in the triangle using cosine rule.​

Mathematics
1 answer:
Aloiza [94]3 years ago
5 0
73.37°


Mark brainliest please


Hope this helps you
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Help.....................
eduard

Answer:

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Step-by-step explanation:

First Question:

\sqrt{100} + [18 ÷ 3 x 4 - 15] - (60 - 7^2 - 1)

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Second Question:

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Answer:

4.5 miles per hour is her rate in miles per hour

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(20/3 * 1/5280)/1/3600

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