If `alpha` lies in ll quadrant, `beta` lies in III quadrant and `tan (alpha + beta) gt 0`, then `(alpha + beta)` lies in... quadrants.

If a lt 0 and b gt 0 then the point (a, b) lies in quadrant

If alpha and beta are angles in the first quadrant sucn than tan alpha = 1/7 and sin beta = (1)/(sqrt10) , then alpha + 2 beta =

If z = x + iy lies in III quadrant, then bar z / z also lies in III quadrant If:

If z = x + iy lies in III quadrant, then bar z / z also lies in III quadrant If:

If z=x+ iy lies in III quadrant,then (bar(z))/(z) also lies in III quadrant If:

If theta lies in second quadrant, then the quadrant in which -theta/(2) lies is

(tan alpha + tan beta )/( tan (alpha + beta ))+(tan alpha - tan beta )/(tan (alpha - beta )) =

Fill in the gaps with correct answers. If alpha and beta lie in 1st and 2nd quadrants respectively, and if sin alpha = (1)/2, sin beta = (1)/3, then sin ( alpha + beta ) = _____.

If sinalpha=1/sqrt5 and sinbeta=3/5 , then beta-alpha lies in

If sinalpha=1/sqrt5 and sinbeta=3/5 , then beta-alpha lies in