If tan½A=t, derive the expression for cosA and sinA in terms of t. Hence or otherwise, prove that if secA-tanA=x then tan½A=1-x÷1+x

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25-06-2024
Mathematics

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If tan½A=t, derive the expression for cosA and sinA in terms of t. Hence or otherwise, prove that if secA-tanA=x then tan½A=1-x÷1+x

Sagot :

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