sqrt((1-sin A)/(1+sin A))=cos A

If sqrt((1-sin A)/(1+sin A))+(sin A)/(cos A)=(1)/(cos A) for all permissible values of,then A can belong to

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))

sqrt((1+sin A)/(1-sin A))=(1+sin A)/(cos A)

Ify,=sqrt(((1+cos x)/(2))), provethat (dy)/(dx)=-(1)/(2)(sin x)/(2) If y,=sqrt((1+sin x)/(1-sin x)), prove that cos x(dy)/(dx)=y

sqrt ((1-cos A) / (1 + cos A)) = (sin A) / (1 + cos A)

If A=340^(@), prove that 2sin((A)/(2))=-sqrt(1+sin A)+sqrt(1-sin A) and 2cos((A)/(2))=-sqrt(1+sin A)-sqrt(1-sin A)

If sqrt(1+ sin A )-sqrt(1-sin A )=2 cos""(A)/(2) , then value of A can be

If sqrt(1+ sin A )-sqrt(1-sin A )=2 cos""(A)/(2) , then value of A can be

if y = sqrt ((1 + sin x) / (1-sin x)), prove that cos x (dy) / (dx) = y