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1-tanA 12. If 3 cot A = 4, then check wh...

1-tanA 12. If 3 cot A = 4, then check whether 1 + tanº A is cos-A-sin-A. [NCERT Exercise]

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NCERT Exercises 1.3

If 3 cot 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 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.

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

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.