" Prove that: "cos A+sin A-1=cos ecA+cot A?

Prove that: (cos 2A cos 3A -cos 2A cos 7A + cos A cos 10A)/("sin" 4A sin 3A - sin 2A sin 5A + sin 4A sin 7A) = cot 6A cot 5A

Prove that: (cos 2A cos 3A-cos 2A cos 7A + cos A cos 10A)/(sin 4A sin 3A -sin 2A sin 5A + sin 4A sin 7A)= cot 6A cot 5A .

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

prove that (cos A-sin A + 1) / (cos A + sin A-1) = cos ecA + cot A

Prove the following identity,where the angles involved are acute angles for which the expressions are defined.(cos A-sin A+1)/(cos A+sin A-1)=cos ecA+cot A

Prove that: (cos2A\ cos3A-cos2Acos7A+cos10 A cos A)/(sin4A\ sin3A-sin2A sin5A+sin4Asin7A )=cot6A\ cot5A

Prove that (cot A-cos A) / (cot A + cos A) = (cos ecA-1) / (cos ecA + 1)

prove that: (cot A-cos A) / (cot A + cos A) = (cos ecA-1) / (cos ecA + 1)

Prove that ( sin 2 A )/( 1 - cos 2 A) = cot A

Prove that :cos ecA-2cot2A cos A=2sin A