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If-sinA-sinB-a-tanA-tanB-b-secA-secB-c-Prove-that-8bc-a-4b-2-b-2-c-2-2-

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Question Number 9211 by tawakalitu last updated on 23/Nov/16
If sinA + sinB = a tanA + tanB = b secA + secB = c Prove that, 8bc = a[4b^2 + (b^2 − c^2 )]^2
IfsinA+sinB=atanA+tanB=bsecA+secB=cProvethat,8bc=a[4b2+(b2−c2)]2

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