CotA-cosec A A-cosec A-1-cos A - 1-cos A

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Trigonometric Identities

cotA-cosec A ...

Question

(cotA-cosecA)(cotA-cosecA) =1-cosA/1+cosA

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prove that: cotA-cosA/ cotA +cosA = cosecA-1/cosecA+1

\frac{c o t A + c o s e c A - 1}{c o t A - c o s e c A + 1} = \frac{1 + c o s A}{s i n A} = c o s e c θ + c o t θ = \frac{s i n A}{1 - c o s A}

$\sqrt{\frac{1 + c o s A}{1 - c o s A}}$ = ?

(a) cosec A - cot A (b) cosec A + cot A

\frac{c o t A + c o s e c A - 1}{c o t A - c o s e c A + 1} = \frac{1 + c o s A}{s i n A}

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