Question

1. Evàlúàté
(i) sin 18°/cos 72°
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Answer 1

Answer:

cos(90-18)/cos72

Step-by-step explanation:

cos72/cos72=1

Answer 2

Answer:

1

Step-by-step explanation:

sin18/cos 72

sin18/cos (90-18)

sin18/sin18=1