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" (10.) "(1-cos A)/(1+cos A)=(cot A-cose...

" (10.) "(1-cos A)/(1+cos A)=(cot A-cosec A)^(2)

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Prove that : (1 + cos A)/(1 - cos A) = (cosec A + cot A)^(2)

Prove that , (Cot A-cos A)/(cot A+cos A)=(cosec A-1)/(cosec A+1)

(1+tan A)/(sin A)+(1+cot A)/(cos A)=2(sec A+cosec A)

(cosec A)/(cot A+tan A)=cos A

Prove the following identities : sqrt ((1 - cos A) /(1 + cos A)) = cosec A - cot A

cosec A- 2cot 2A cos A=

Prove the following identities : (sin A)/(1 - cos A) - cot A = cosec A

sin A(1+tan A)+cos A(1+cot A)=sec A+cosec A

Prove the following : (cot A - cos A)/(cot A + cos A) = (cosec A -1)/(cosec A + 1) .

Show that (cot A - cos A)/(cot A + cos A) = ( cosec A - 1)/(1 + cosec A)