Answer: m∠JKL = 41°
Step-by-step explanation:
It is given that m∠JKM is 83 degrees, m∠NKM is 21 degrees, KN bisects LKM, and we need to find m∠JKL.
Since KN bisects ∠LKM, that means that m∠LKN and m∠NKM will be congruent. It is given that m∠NKM is equal to 21 degrees, so m∠LKN will also be 21 degrees using the angle bisector theorem.
Next, we know that JKM is 83 degrees. We can create an equation using the angle addition postulate.
JKM = JKL + LKM
Substitute known values:
83° = JKL + (LKM + NKM)
83° = JKL + (21° + 21°)
Add 21 to 21:
83° = JKL + (42°)
Subtract 42 from both sides of the equation:
41° = m∠JKL
This gives us our answer, m∠JKL is 41 degrees.