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Question
Find the value of 'A', if (1 - cosec A)(2 - sec A) = 0
Solution
(1 - cosec A)(2 - sec A) = 0
⇒ 1 - cosec A = 0 and 2 - sec A = 0
⇒ cosec A = 1 and sec A = 2
⇒ cosec A = cosec 90° and sec A = sec 60°
⇒ A = 90° and A = 60°.
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