A.  a2 cos2 α+ b2 sin2 α =p2

B.  a2 cos2 α- b2 sin2 α =p2

C.  a2 sin2 α+ b2 cos2 α =p2

D.  a2 sin2 α+ b2 cos2 α =p2

1
Correct Answer :
a2 cos2 α- b2 sin2 α =p2
Explanation :
No Explanation available for this question

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