ANSWERS
A.
[tex] \frac{19}{20} [/tex]
EXPLANATION
It was given that triangle LMN is a right triangle and angle L and M are complementary.
This implies that:
[tex] \sin(L) = \cos(M) [/tex]
It was given in the question that:
[tex] \cos(M) = \frac{19}{20} [/tex]
This implies that:
[tex] \sin(L) = \frac{19}{20} [/tex]
