If cos theta=(cos phi-e)/(1-e cos phi),show that:tan(theta)/(2)=pmsqrt((1+e)/(1-e))tan(phi)/(2)...

If cos theta=(2cos phi-1)/(2-cos phi), then find the value of tan((theta)/(2))

If cos theta=(a cos phi+b)/(a+b cos phi) then tan^(2)((theta)/(2)) is equal to

If cos theta = (a cos phi + b) / (a + b cos phi) then (tan ((theta) / (2))) / (tan ((phi) / (2))) = (A) ( ab) / (a + b) (B) (a + b) / (ab) (C) sqrt ((a + b) / (ab)) (D) sqrt ((ab) / (a + b))

If a cos phi=b cos theta, show that a tan theta+b tan phi=(a+b)tan((theta+phi)/(2))

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

If cos(theta+phi)=m cos(theta-phi) then tan theta is equal to

If cos(theta+phi)= mcos(theta-phi) , then prove that tan theta=(1-m)/(1+m)cotphi .

Let theta,phi in[0,2 pi] be such that 2cos theta(1-sin phi)=sin^(2)theta((tan)(theta)/(2)+(cot)(theta)/(2))cos phi-1,tan(2 pi-theta)>0 and -1

If tan(theta)/(2)=sqrt((1-e)/(1+e))tan(alpha)/(2), then cos alpha=1-e cos(cos theta+e)(b)(1+e cos theta)/(cos theta-e)(c)(1-e cos theta)/(cos theta-e) (d) (cos theta-e)/(1-e cos theta)