Q.872 : यदि a + b = 90° तथा a : b = 2 : 1 है तो tanA : tanB = ?

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Q.872 : यदि a + b = 90° तथा a : b = 2 : 1 है तो tanA : tanB = ?
(a) 3 : 1
(b) 2 : 3
(c) 4 : 5
(d) 1 : 3

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Answer :3 : 1

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