Math, asked by thelegendSlayer, 3 months ago

without using trigonometric tables, prove that
cos 70°/sin 20° + cos 59°/sin 31° - 8 sin^2 30° = 0
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Answers

Answered by royr04278

4

cos70∘sin20∘+cos59∘sin31∘-8sin230∘. = 0

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