Tolong bantu jawab ya kaka beserta caranya

a) cos L = LM/LN
cos 30 = 6/LN
√3/2 = 6/LN
LN = 6 × 2/√3
= 12/√3 rasionalkan
= 12/√3 × √3/√3
= 12√3 / 3
= 4√3
b) sin 45 = KL/LN
√2/2 = KL/4√3
KL= 4√3 × √2/2
KL = 2√6