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jawab

ΔABC siku siku  C
1)
a= 3, c = 3√2
b = √c²-a²
b = √(18-9) = √9
b = 3

sin A = a/c = 3/3√2 = 1/2 √2
cos A = b/c = 3/3√2 = 1/2 √2
tan A = a/b = 3/3  = 1

2)
a = 8 , b = 15
c = √a²+b² = 17
sin A = a/c = 8/17
cos A = b/c = 15/17
tan A = a/b = 8/15