" Q "9quad " If "sin alpha-cos alpha=(1)/(5)," then "tan((alpha)/(2))=

If alpha in Q_(4) and (sin alpha)/(2)+(cos alpha)/(2)=-(1)/(2) then sin2 alpha=

sin 2 alpha - cos 2 alpha tan alpha =

If alpha in Q_(4) and sin((alpha)/(2))+cos((alpha)/(2))=-(1)/(2) then sin2 alpha=

tan theta = (sin alpha-cos alpha) / (sin alpha + cos alpha)

If sin alpha+cos alpha=sqrt(2)cos alpha then show that tan2 alpha=1

If tan theta = (Q sin alpha)/(P + Q cos alpha), "prove that", tan (alpha - theta) = (P sin alpha)/(Q + P cos alpha).

The value of (sin(pi-alpha))/(sin alpha-cos alpha tan.(alpha)/(2))-cos alpha is

The value of (sin(pi-alpha))/(sin alpha-cos alpha tan.(alpha)/(2))-cos alpha is

The value of (sin(pi-alpha))/(sin alpha-cos alpha tan.(alpha)/(2))-cos alpha is