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प्रश्न
Calculate the value of A, if (sec 2A - 1) (cosec 3A - 1) = 0
उत्तर
( sec 2A – 1) ( cosec 3A – 1) = 0
sec 2A – 1 = 0 and cosec 3A – 1 = 0
sec 2A = 1 and cosec 3A = 1
sec 2A = sec0° and cosec 3A = cosec90°
A = 0° and A = 30°
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