In triangle ABC, angle B = 90 degrees, and AC = 13 cm.
Determine:
a) AB if angle C - 26 degrees.
b) angle C if BC = 9cm.
A
13
B 9 C
a) If angle C = 26
Then
sin 26 = AB / 13
13sin26 = AB ≈ 5.7
b) If BC = 9
cos C = 9/13
arccos (9/13) = C ≈ 46.2°