Prove -Sin sup3- empty-cos sup3- empty- divide-sin empty- cos empty- - sin empty-x cos empty- - 1

L.H.S.=sin3 #981;+cos3 #981;sin #981;+cos #981;+sin #981;cos #981; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; ...

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Trigonometric Ratios of Multiples of an Angle

Prove Sin ...

Question

Prove Sin³∅+cos³∅÷sin∅+ cos∅ + sin∅x cos∅ = 1

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