Prove that- A -tan A -2 2A

LHS =cos A #160; sin A #160; sin A #160; sin A #160; =cos ^ 2 A sin ^ 2 A #160; sin A cos A #160; =2cos 2A /sin 2A =2 2A ...

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Sum of Trigonometric Ratios in Terms of Their Product

Prove that: ...

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Prove that: $cot A - tan A = 2 cot 2 A$

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tan A - cot A = - 2 cot 2 A

\frac{tan A}{1 - cot A} + \frac{cot A}{1 - tan A} = 1 + tan A + cot A

(sec A + tan A - 1) (sec A - tan A + 1) = 2 tan A

Prove that :

tanA/1-cotA + cotA/1-tanA = secAcosecA+1

\frac{tan A}{1 - cot A} + \frac{cos A}{1 - tan A} = 1 + tan A + cot A = 1 + sec A csc A

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