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09-07-2021
Mathematics

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How long is JK?

Choose 1 answer:
A: 3
B: 2 square root 3
C: 3 square root 3
D: 6
E: 9

How long is JK Choose 1 answer A 3 B 2 square root 3 C 3 square root 3 D 6 E 9 class=

Respuesta :

cwayneu cwayneu

19-07-2021

Answer:

C) 3 times the sq root of 3

Step-by-step explanation:

In a right angle triangle, the COS is definned as the ajacent side over the hypotenuse. So

COS 60 = JK/JL

COS 60 = JK/(6*sq root 3)

.5 = JK/(6*3**1/2)

JK = .5 *(6*3**1/2)

JK = 3*3**1/2

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