Given that tan 25°= a, express in terms of a . find tan 205°, Sin 25°, Cos 65° & Cos 245°

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Trigonometry Ex 5C Q 7
  1. IGCSE AS & A level Kishan Swaroop Yadav
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Given that tan 25°= a, express in terms of a . find tan 205°, Sin 25°, Cos 65° & Cos 245°

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