If `tan alpha=(5)/(6)` and `tan beta=(1)/(11)`, `alpha` and `beta` in `(0,(pi)/(4))` . Then the value of `cos[pi-(a+beta)]` is

If tan alpha = (5)/(6) tan beta = (1)/(11) then the value of alpha + beta is

If cos alpha=-(3)/(5) and sin beta=(7)/(25) where (pi)/(2)

If 2 sin 2alpha=tan beta,alpha,beta, in((pi)/(2),pi) , then the value of alpha+beta is

If tan alpha = 1/5, tan beta =(1)/(239), then the value of tan (4 alpha -beta) is

If tan alpha=(x)/(x+1) and tan beta=(1)/(2x+1), then alpha+beta is equal to pi/2(b)pi/3(c)pi/6(d)pi/4

If cos(alpha+beta)=(4)/(5);sin(alpha-beta)=(5)/(13) and alpha,beta lie between 0&(pi)/(4) then find the value of tan2 alpha

Let cos(alpha+beta)=(4)/(5) and let sin(alpha-beta)=(5)/(13) , where 0 le alpha , beta=(pi)/(4) . Then tan2alpha=

If cos(alpha+beta)=(4)/(5) and sin(alpha-beta)=(5)/(13) , where alpha lie between 0 and (pi)/(4) , then find that value of tan2alpha .

If cos(alpha+beta)=(5)/(13) and cos(alpha-beta)=(4)/(5) then find the value of tan2 beta