jakemascetta13 jakemascetta13

12-04-2018
Mathematics

contestada

what is the aproximate length of jk?

what is the aproximate length of jk class=

Respuesta :

calculista calculista

21-04-2018

we know that

∡LKM=55°

if KM≡JM
then
∡JKM=45°

step 1
find KM
tan 55=12/KM------> KM=12/tan 55------> KM=8.40 cm

applying the Pythagorean theorem to the triangle KJM

JK²=KM²+JM²------> JK²=8.4²+8.4²----> JK²=141.12-----> JK=11.88 cm

the answer is
11.9 cm

Answer Link

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