[" 46.सरलतम रूप में लिखो। "],[(1+cos A)(1-cos A)(1+cot^(2)A)]

(1+cos theta)(1-cos theta)(1+cot^(2)theta)=1

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

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

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

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

cos^(-1)(cos(2cot^(-1)(sqrt(2)-1)))

cos^(-1){cos2cot^(-1)(sqrt(2)-1)}

Prove each of the following identities : (i) (1+ cos theta)(1- cos theta)(1+ cot^(2) theta)=1 (ii) "cosec" theta (1+ cos theta)("cosec" theta - cot theta)=1

The value of ((sin A)/(1-cos A)+(1-cos A)/(sinA) div ((cot^2 A)/(1+cosec A)+1) is:

sqrt ((1-cos A) / (1 + cos A)) = cos ecA-cot A