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cos (90 - 36)° = cos 54°
b) cos 42°
cos (90 - 42)° = 48°
c) tan 53°
cot (90 - 53)° = 37°
d) cot 18°
tan (90 - 18)° = 72°
e) sec 12°
cosec (90 - 12)° = 78°
f) cosec 87°
sec (90 - 87) = sec 3°
Kalau Jawabannya membantu, aku minta bintang 5-nya Ya :)