[" 4."(sin(theta+phi))/(cos(theta-phi))=,(1-x)/(1+x)" z.6"" Grite "Q" ,"],[,tan((pi)/(4)-theta)tan((pi)/(4)-phi)=x]

"If" (sin ( theta + varphi))/(cos ( theta - varphi))= (1-x)/(1+x), "show that" tan( pi/4 - theta)tan( pi/4 - varphi) = x

sin(theta+phi)/cos(theta-phi)=(1-x)/(1+x) then prove that tan(pi/4-theta)tan(pi/4+phi)=x

(sin (theta + phi))/( sin theta cos phi) = cot theta tan phi +1.

If (a-b)sin (theta+phi)=(a+b)sin(theta-phi) and a tan. (theta)/(2)-b tan.(phi)/(2)=c , then

(sin theta-sin phi)^(2)+(cos theta-cos phi)^(2)=4sin^(2)(theta-phi)/(2)

The value of cos((pi)/(4)-theta)cos((pi)/(4)-phi)-sin((pi)/(4)-theta)sin((pi)/(4)-phi) will be

Prove that: (sin(x+theta))/(sin(x+phi))=cos(theta-phi)+cot(x+phi)sin(theta-phi)

If sin theta=5sin(theta+phi) then tan(theta+phi)=

If sin theta+sin phi=(1)/(4) and cos theta+cos phi=(1)/(5) then value of sin(theta+phi) is

Compute the following: {:[(sin(theta+phi), cos(theta+phi)),(sin(theta - phi),cos(theta-phi))] +[(sin(theta-phi), cos(theta-phi)),(sin(theta+phi), cos(theta+phi))]