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" Shuw that ":(1+tan^(2)A)+(1+(1)/(tan^(...

" Shuw that ":(1+tan^(2)A)+(1+(1)/(tan^(2)A))=(1)/(sin^(2)A-sin^(4)A)=(1)/(sin^(2)A cos^(2)A)

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Prove: (1+tan^(2)A)+(1+(1)/(tan^(2)A))=(1)/(sin^(2)A-sin^(4)A)

Prove that : (1 + tan^(2) A) + (1 + (1)/ (tan^(2) A)) = (1)/ (sin^(2) A - sin^(4) A)

Prove: (1+tan^2A)+(1+1/(tan^2A))=1/(sin^2A-sin^4A)

Prove: (1+tan^2A)+(1+1/(tan^2A))=1/(sin^2A-sin^4A)

Prove that : (1+ (1)/(tan^2 A)) (1 +(1)/(cot^2 A)) = (1)/(sin^2 A - sin^4 A)

Prove that (sin^(2)A)/(cos^(2)A)+1=(tan^(2)A)/(sin^(2)A)

(tan ^ (2) A sin ^ (2) A) / (tan ^ (2) A-sin ^ (2) A) = 1

Show that (i) sin^(8)A-cos^(8)A=(sin^(2)A-cos^(2)A)(1-2sin^(2)A.cos^(2)A) (ii) (1)/(sec A-tan A)-(1)/(cos A)=(1)/(cos A)-(1)/(sec A + tan A)

Show that (i) sin^(8)A-cos^(8)A=(sin^(2)A-cos^(2)A)(1-2sin^(2)A.cos^(2)A) (ii) (1)/(sec A-tan A)-(1)/(cos A)=(1)/(cos A)-(1)/(sec A + tan A)

(1 + tan A) / (1-tan A) = (cos2A) / (1-sin2A)