`tanalpha=cotbeta=a` ,find `(alpha+beta)`

If tanalpha=kcotbeta , then (cos(alpha-beta))/(cos(alpha+beta)) is equal to

alpha + beta = 5 , alpha beta= 6 .find alpha - beta

If tan(alpha-beta)=(sin2beta,)/(3-cos2beta) then (a) tanalpha=2tanbeta (b) tanbeta=2tanalpha (c) 2tanalpha=3tanbeta (d) 3tanalpha=2tanbeta

If tan(alpha-beta)=(sin2beta,)/(3-cos2beta) then (a) tanalpha=2tanbeta (b) tanbeta=2tanalpha (c) 2tanalpha=3tanbeta (d) 3tanalpha=2tanbeta

If tan(alpha-beta)=(sin2beta,)/(3-cos2beta) then (a) tanalpha=2tanbeta (b) tanbeta=2tanalpha (c) 2tanalpha=3tanbeta (d) 3tanalpha=2tanbeta

If sin alpha=(12)/(13), cos beta =4/5 and alpha, beta are two acute angles, then Value of (tanalpha-tan beta)/(1+tanalpha tan beta) is

The angle of elevation of the top of a tower standing on a horizontal plane from a point A is alpha . After walking a distance d towards the foot of the tower the angle of elevation is found to be beta . The height of the tower is (a) d/(cotalpha+cotbeta) (b) d/(cotalpha-cotbeta) (c) d/(tanbeta-t a nalpha) (d) d/(tanbeta+tanalpha)

The angle of elevation of the top of a tower standing on a horizontal plane from a point A is alpha . After walking a distance d towards the foot of the tower the angle of elevation is found to be beta . The height of the tower is (a)d/(cotalpha+cotbeta) (b) d/(cotalpha-cotbeta) (c)d/(tanbeta-t a nalpha) (d) d/(tanbeta+tanalpha)

If 3sinbeta=sin(2alpha+beta) then tan(alpha+beta)-2tanalpha is (a)independent of alpha (b)independent of beta (c)dependent of both alpha and beta (d)independent of both alpha and beta