tan 25. is equal to 1 + tan A (1) s...
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tan 25. is equal to 1 + tan A (1) sin2A (3) tan2A (2) COS2A (4) COLZA

JEE/Engineering Exams
Maths
Solution
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( frac{1-tan ^{2} 4}{1+tan ^{2} 4}=cos 2 pi ) ( 2 cos (2 cdot pi / 4-4) ) ( 2 cos left(90^{circ}-24right) ) ( 2 cdot sin 2 A )
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