3 years ago

Please help pleasssseeee

Mathematics

1 answer:

Ludmilka [50]3 years ago

5 0

Answer:f is 94 I am very sure

Step-by-step explanation:

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Law of cosines: a2 = b2 + c2 – 2bccos(A) What is the measure of P to the nearest whole degree? 35° 52° 57° 72°

Ymorist [56]

Answer: 57°

Given : In triangle PQR, the side PQ is 17, QR is 15, and PR is 14.

We use law of cosine formula

$QR^2 = PR^2 + PQ^2 - 2* PR * PQ * cos (P)$

$15^2 = 14^2 + 17^2 - 2*14 * 17 * cos(P)$

225 = 196 + 289 - 476 cos(P)

225 = 485 - 476 cos (P)

Subtract 485 on both sides

-260 = -476 cos(P)

$\frac{260}{476}$ = cos(P)

P = $cos^{-1} (\frac{260}{476})$

P= 56.89202

So measure of angle P is 57 degrees

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3 years ago

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What is (6 x 10) + 9

astra-53 [7]

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(60) + 9 = 69

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3 years ago

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Chris is trimming trees. He can trim 2/3 of a tree in 1/2 of an hour. At what rate can Chris trim trees

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4 years ago

You dont need to help with the second one just the first one

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Step-by-step explanation:

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