If m is 21 inches, j is 28 inches, and ∠K measures 90°, then find k using the Law of Cosines. Round your answer to the nearest tenth.

35 in

49 in

1,225 in

2,401 in

The answer to your question is k = 35 in

Step-by-step explanation:

Data

m = 21 in

j = 28 in

∠k = 90°

Process

1.- Use the law of cosines to find k

                k² = m² + j² - 2 j m cos K

2.- Substitution

                k² = (21)² + (28)² - 2(21)(28) cos 90

3.- Simplification

                 k² = 441 + 784 - 1176 (0)

                 k² = 1225

                 k = 35 in

the answer is 3/2 and for decimal: 1.5

hope i

-lavira: )