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Tan 15 + cot 15= 4 |
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Answer» good thank you for help me tan 15 + cot 15= sin 15 / cos 15 + cos 15 / sin 15= (sin²15 + cos²15) / (sin 15 cos 15)= 1 / (1/2 sin 30)= 2 / sin 30= 2 / (1/2)= 4 |
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