Question

What is the measure of ∠P, to the nearest degree?


24°

42°

55°

101°
A scalene triangle P Q R. Side P Q is labeled as 5 feet. Side Q R is labeled as 10 feet. Side P R is labeled as 12 feet.

Answer 1

Answer:

55°

Step-by-step explanation:

use The Law of Cosines

cos p = (PR² + PQ² - QR²) / 2 x PR x PQ

         = (144 + 25 - 100) / 120

         = 69 / 120

         =0.575

∠P = 55°

Answer 2

Answer:

55 degrees

Step-by-step explanation:

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