Q.2477 : यदि A तथा B न्यूनकोण है तथा sinA = cos B हो तो A + B = ?

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Q.2477 : यदि A तथा B न्यूनकोण है तथा sinA = cos B हो तो A + B = ?
(a) 90°
(b) 105°
(c) 45°
(d) 30°

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Answer :90°