Prove that 270- - A 90- - A - tan 270- - A tan 90- - A - 1 - 0-

( 270^∘ A ) ( 90^∘ A ) tan ( 270^∘ A )tan ( 90^∘+A )+1 = ( cosec A) (cosec A) (cot A) ( cot A) + 1 = cot^2A cosec^2 A + 1 = 1 + 1 ...

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Complementary Trigonometric Ratios

Prove that 2...

Question

Prove that
$sec (270^{\circ} - A) sec (90^{\circ} - A) - tan (270^{\circ} - A) tan (90^{\circ} + A) + 1 = 0$ .

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