Number 2 involves many angles: #1 (cos X) / (cos X - sin X) = (cot X) / (cot X -1) #2 (sin 3X + sin 7X) / (cos 7X + cos 3X) = tan 5X
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Originally Posted by olokish Number 2 involves many angles: #1 (cos X) / (cos X - sin X) = (cot X) / (cot X -1) #2 (sin 3X + sin 7X) / (cos 7X + cos 3X) = tan 5X 1. .
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