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Asked by Kewal

Prove that
1 + tanAtanA/2 = tanAcotA/2 -1 = secA
13 years ago

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Answered by Damon
1 + (sinA/cos A) (1-cosA)/sin A
= 1 + 1/cos A - 1
= 1/cos A = sec A
13 years ago
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Prove that
1 + tanAtanA/2 = tanAcotA/2 -1 = secA

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