" 70." "Iदि tan theta = "(x sin phi)/(1-x cos phi)" And "tan phi=(y sin phi)/(1-y cos phi)" हो,तो "(x)/(y)

If tan theta=(x sin phi)/(1-x cos phi) and tan phi=(y sin theta)/(1-y cos theta) then the value of (x)/(y) is

If tan theta = (xsin phi)/(1-xcos phi) and tan phi = (y sin theta)/(1-y cos theta) show that x sin phi = y sin theta

If tan theta = (x without phi) / (1-x cos phi) and tan phi = (y without theta) / (1-y cos theta) then (x) / (y) = (A) (without phi) / (without theta) (B) (without theta) / (without phi) (C) (without phi) / (1-cos theta) (D) (without theta) / (1-cos phi)

If sin theta = k sin (theta + phi),"show that", tan(theta + phi) = (sin phi)/(cos phi -k).

If sin theta=k sin(theta+phi), show that tan(theta+phi)=(sin phi)/(cos phi-k)

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

If x = sec phi - tan phi and y = cos ec phi + cot phi , then

If " " tan theta = 1/7 " and " tan phi = 1/3 " show that", cos 2 theta = sin 4phi