" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
JK = 5 cmJL = 5 cm
KL = 5√2 cm
Misal LM = x, maka :
LM² = JL² + JM²
x² = 5² + JM²
JM² = x² - 5²
JM² = x² - 25
JM = √(x² - 25)
LM² = JL×KL - JM×MK
LM² = JL×KL - JM×(JK-JM)
x² = 5×5√2 - √(x²-25) × {5-√(x²-25)}
x² = 25√2 - {5√(x²-25) - x²-25}
x² = 25√2 - 5√(x²-25) + x²-25
x² - x² = 25√2 - 5√(x²-25) + -25
0 = 25√2 - 5√(x²-25) - 25
5√(x²-25) = 25√2 - 25
{5√(x²-25)}/5= {25√2 - 25}/5
√(x² - 25) = 5√2 - 5
JM = 5√2 - 5
MK = JK - JM
MK = 5 - (5√2 - 5)
MK = 5 - 5√2 + 5
MK = 10 - 5√2
MK = 5(2 - √2) cm