In right angle ΔABC, AB = c cm, AC = b cm and CB = a cm. If ∠ A = 2∠B, then which of the following is true?

In right angle ΔABC, AB = c cm, AC = b cm and CB = a cm. If ∠ A = 2

1.	In right angle ΔABC, AB = c cm, AC = b cm and CB = a cm. If ∠ A = 2∠B, then which of the following is true?
A.	a2 = b2 – bc
B.	a2 = b2 – ac
C.	a2 = b2 + bc
D.	a2 = b2 + ac
Answer» D. a2 = b2 + ac

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In right angle ΔABC, AB = c cm, AC = b cm and CB = a cm. If ∠ A = 2∠B, then which of the following is true?

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