If tan A = n sin B and sin A = m sin B, then the value of cos2 A is- – McqOptions

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1.	If tan A = n sin B and sin A = m sin B, then the value of cos2 A is-
A.	m2/n2
B.	m2 × n2
C.	m2 – n2
D.	m2 + n2
Answer» B. m2 × n2

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