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 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
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