In a triangle ∠ B = 90° and ∠ A = 30° then sin2 A – cos2 A + t – McqOptions

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1.	In a triangle ∠ B = 90° and ∠ A = 30° then sin2 A – cos2 A + tan2 A:
A.	– 3/12
B.	1/6
C.	2/6
D.	– 1/6
Answer» E.

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