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प्रश्न
Calculate the value of A, if (cosec 2A - 2) (cot 3A - 1) = 0
उत्तर
( cosec 2A – 2) (cot 3A – 1) = 0
cosec 2A – 2 = 0 and cot 3A – 1 = 0
cosec 2A = 2 and cot 3A = 1
cosec 2A = cosec 30° and cot 3A = cot 45°
2A = 30° and 3A = 45°
A = 15° and A = 15°
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