" (a) "(tan theta)/(1-cos theta)+(cos theta)/(1-tan theta)=1+sec theta cos alpha e theta

(tan theta)/(1-cot theta)+(cot theta)/(1-tan theta)=1+sec theta*cos ec theta

(tan theta)/(sec theta+1)+(sec theta+1)/(tan theta)=2cos ec theta

(sin theta tan theta)/(1-cos theta)=1+sec theta

(sin theta)/(1-cos theta)+(tan theta)/(1+cos theta)=sec theta cos ec theta-cot theta

(cos theta)/(sec theta-tan theta)=1+sin theta

Prove: (cos theta)/(1+sin theta) = sec theta - tan theta

Prove the following identity : (sin theta)/(1+cos theta)+ (tan theta)/(1+cos theta)= sec theta cosec theta- cot theta .

Prove that: (cos theta)/(1 + sin theta) = sec theta - tan theta

Prove the following identities: (sin theta)/(1-cos theta)+(tan theta)/(1+cos theta)=sec theta cos ect+cot theta

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