" (78) "quad " frog anforts: "(cot A-cos A)/(cot A+cos A)=(csc A-1)/(csc A+1)

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

Prove that (cot A - cos A)/(cot A + cos A) = (cosec A -1)/(cosecA+1) .

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

cosec A- 2cot 2A cos A=

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

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

cosec A -2 cot 2A cos A=

Prove that (i) (tan A+ sin A)/(tan A- sin A)= (sec A+1)/(sec A-1) (ii) (cot A- cos A)/(cot A+ cos A)= ("cosec" A-1)/("cosec" A+1)

7. (sin A+cos A)(cot A+tan A)=sec A+cosec A