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[" iy "(1-tan^(2)A)/(1-tan^(2)A)=cos^(2)...

[" iy "(1-tan^(2)A)/(1-tan^(2)A)=cos^(2)A-sin^(2)A]

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If 3 cot A = 4 , check whether (1-tan^(2)A)/(1+tan^(2)A)=cos^(2)A-sin^(2)A is true or not.

If quad 3cot A=4 check whether (1-tan^(2)A)/(1+tan^(2)A)=cos^(2)A-sin^(2)A or not.

If 3cot A=4 , check whether (1-tan^2A)/(1+tan^2A)=cos^2A-sin^2A or not.

If 3cot A=4 , check whether (1-tan^2A)/(1+tan^2A)=cos^2A-sin^2A or not.

If 3 cot A = 4, check whether (1 - tan^2 A) / (1 + tan^2 A) = cos^2 A - sin^2 A or not.

If 3cotA=4, check whether (1-tan ^ 2 A)/ (1+tan ^2 A) ​ =cos ^2 A−sin ^2 A or not

If 3 cotA=4,check whether (1-tan^2A)/(1+tan^2A)=Cos^2A-Sin^2A or not.

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)