evaluate SIN60º by COS 72º
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Sin 60 / Cos 72
Cos 72 = Sin (90-72) = Sin 18
Sin 60 / Sin 18
Cos 72 = Sin (90-72) = Sin 18
Sin 60 / Sin 18
Answered by
1
sin 60/ cos 72
cos72 =sin (90-72) =sin 18
sin 60/ sin 18
cos72 =sin (90-72) =sin 18
sin 60/ sin 18
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