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" 3."sqrt(4cos x)(cos A)/(1+sin A)+(1+si...

" 3."sqrt(4cos x)(cos A)/(1+sin A)+(1+sin A)/(cos A)=2sec A

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(cos A)/(1+sin A)+(sin A)/(cos A)=sec A

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

( cos A ) /( 1 + sin A ) + ( 1 + sin A ) /( cos A ) = 2 sec A

To prove '(cos A / 1 + sin A) + (1 + sin A / cos A) = 2sec A

Prove the following identities: (cos A)/(1-sin A)+(sin A)/(1-cos A)+1=(sin A cos A)/((1-sin A)(1-cos A))((1+cot A+tan A)(sin A-cos A)/(sec^(3)A-cos ec^(3)A)=sin^(2)A cos^(2)A

(1+sec A)/(sec A)=(sin^(2)A)/(1-cos A)

Prove that (i) (sec 8A -1)/(sec 4A -1) =(tan 8A)/(tan 2A) (ii) (cos A+ sin A)/(cos A - sin A)-(cos A-sin A)/(cos A+sin A)=2 tan 2A

(1)/(sec^(4)alpha)+(1)/(cos ec^(4)alpha)+(2)/(sec^(2)alpha+cos ec^(2)alpha)=? and (cos A)/(1+sin A)+(1+sin A)/(cos A)=?

(1)/(sec^(4)alpha)+(1)/(cos ec^(4)alpha)+(2)/(sec^(2)alpha+cos ec^(2)alpha)=? and (cos A)/(1+sin A)+(1+sin A)/(cos A)=?

tan ""A/2 is equal to.............. A) sqrt((1- sin A)/( 1+ sin A)) B) sqrt((1+ sin A)/(1- sin A)) C) sqrt((1 -cos A)/(1 + cos A)) D) sqrt((1 +cos A)/(1- cos A))