" 70."(cos A cosec A-sin A sec A)/(cos A+sin A)=cosec A-sec A

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

Prove that : (cosec A-sin A ) (sec A-cos A)=sinA cosA

Prove that : (1)/ (cos A + sin A - 1) + (1)/ (cos A + sin A + 1) = cosec A + sec A

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

What is the value of (cosec A - sin A) (sec A - cos A) (tan A + cot A) ?

Prove the following identities : (cosec A - sin A) (sec A - cos A) (tan A + cot A) = 1

(cot^(2)A*sec A)/(cos^(2)A*sin^(2)A)=sec A*cosec^(4)A

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

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