[alpha+beta=(pi)/(4)rArr(1+tan alpha)(1+tan beta)=],[" 1."1]

If alpha+beta=pi/4 then (1+tan alpha)(1+tan beta)=

If alpha+beta=pi/4 then (1+tan alpha)(1+tan beta)=

a + beta = (3 pi) / (4) rArr (1-tan alpha) (1-tan beta) = 10 (3) / (2)

If alpha+beta=pi/(4), then (1+"tan"alpha)(1+"tan"beta) is

If alpha + beta = 3pi//4 " then " (1- tan alpha ) (1- tan beta ) =

If tan theta = ( tan alpha + tan beta)/(1 + tan alpha tan beta),"show that " sin 2 theta =(sin 2 alpha + sin 2 beta)/(1+sin 2 alpha sin 2 beta)

If tan theta = ( tan alpha - tan beta)/(1-tan alpha tan beta),"show that", sin 2 theta=(sin 2 alpha- sin 2 beta)/(1- sin2 alpha sin 2 beta).

If alpha+dot(beta)=(pi)/(4), then the value of (1+tan alpha)(1+tan beta)

If sin(alpha+beta)=1,sin(alpha-beta)=(1)/(2) then tan(alpha+2 beta)tan(2 alpha+beta)=