[" Luusreation 3.44"],[" If a - "beta-90" ,find the maximum value of "sin alpha sin beta]

If alpha+beta=90^(@) ,find the maximum and minimum values of sin alpha sin beta

If alpha+beta=90^@ , then find the maximum and minimum values of sin alpha sin beta .

If sin alpha cos beta=-(1)/(2) then find the range of values of cos alpha sin beta

If sin alpha cos beta=-(1)/(2) then find the range of values of cos alpha sin beta

If sin alpha cos beta=-(1)/(2) then find the range of values of cos alpha sin(beta

If alpha and beta are acute angles such that alpha+beta=lamda , where constant, find the maximum possible value of the expression sin alpha+sin beta+cos alpha+cos beta .

If alpha and beta are acute angles such that alpha+beta=lamda , where constant, find the maximum possible value of the expression sin alpha+sin beta+cos alpha+cos beta .

If sin alpha+sin beta=2 then find the value of cos^(2)alpha+cos^(2)beta

If sin alpha=15/17 and cos beta=12/13 , find the values of : sin (alpha+beta) .

If alpha , beta are complementry angles such that bsin alpha = a , the find the value of (sin alpha cos beta - cos alpha sin beta) .