If `3sinbeta=sin(2alpha+beta)` then

If 3 sin beta=sin(2alpha+beta) , then tan (alpha+beta)-2 tan alpha is

If 3sin beta = sin(2alpha + beta) , then tan(alpha + beta)-2tan alpha is:

If sin beta = 1/5 sin(2alpha +beta) , show that tan(alpha +beta) = 3/2 tan alpha .

sin alpha=sinbeta, cos alpha=cos beta then

(sinalpha+sinbeta-sin(alpha+beta))/(sinalpha+sinbeta+sin(alpha+beta))=tan(alpha/2)tan(beta/2)

If cos alpha+cos beta=0=sin alpha+sinbeta, then cos2alpha+cos 2beta=

If the lines x(sinalpha+sinbeta)-ysin(alpha-beta)=3 and x(cosalpha+cosbeta)+ycos(alpha-beta)=5 are perpendicular then sin2alpha+sin2beta is equal to:

If the lines x(sinalpha+sinbeta)-ysin(alpha-beta)=3 and x(cosalpha+cosbeta)+ycos(alpha-beta)=5 are perpendicular then sin2alpha+sin2beta is equal to:

The elevation of a tower at a station A due North of it is alpha and at a station B due West of A is beta . Prove that height of the tower is (A B sinalpha sinbeta)/(sin^2alpha-sin^2beta) .