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Asked by kristy

Use the appropriate cofunction to find an equivalent expression for cos 54°

cot 24
sec 32
sin 36
csc 44
14 years ago

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Answered by Jai
recall that cos x = sin (90-x)
90-x = 90-54 = 36
thus cos 54 = sin 36

hope this helps~ :)
14 years ago
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Use the appropriate cofunction to find an equivalent expression for cos 54°

cot 24
sec 32
sin 36
csc 44

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