11" sin "alpha,sin beta-cos alpha*cos beta=1," show that "tan alpha+tan beta=0

sin alpha sin beta-cos alpha cos beta=1 then show that tan alpha+tan beta=0

If sin alpha sin beta - cos alpha cos beta + 1 = 0,"show that", sin (alpha + beta) = 0, "hence deduce that," 1 + cot alpha tan beta = 0.

If sin alpha sin beta-cos alpha cos beta+1=0, then prove that 1+cot alpha tan beta=0

If : 1+sin alpha * sin beta-cos alpha* cos beta=0" ""then" : tan alpha*cot beta=

If sin alpha sin beta-cos alpha cos beta+1=0 , then prove that 1+cotalpha tan beta=0 .

If sin alpha sin beta-cos alpha cos beta+1=0, then the value of 1+cot alpha tan beta is

If x= sin alpha + sin betga , y = cos alpha + cos beta tan alpha + tan beta =

sin alpha + sin beta = a "and" cos alpha + cos beta = b (tan alpha + tan beta)/(1-tan alpha tan beta)=

If sin alpha+sin beta=a and cos alpha-cos beta=b then tan((alpha-beta)/(2))=