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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES -COMPETITIVE THINKING
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- (1- tan 2 ^(@) cot 62^(@))/(tan 152^(@) -cot 88^(@))=
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- (cos 12^(@) - sin 12^(@))/(cos 12^(@) + sin 12) + (sin 147^(@))/(cos 1...
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