If `alpha in Q_4` and `sin(alpha/2)+cos(alpha/2)=-1/2` then `sin 2alpha=`

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

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

If sin.alpha/2+cos.alpha/2=1.4, then: sinalpha=

If sin alpha/2 + cos alpha/2=1.4 , then: sin alpha cos alpha =

If (sin alpha)/(a)=(cos alpha)/(b), then a sin2 alpha+b cos2 alpha=

sin alpha+sin2 alpha+sin4 alpha+sin5 alpha=4cos((alpha)/(2))cos(3(alpha)/(2))sin3 alpha

sin alpha+sin2 alpha+sin4 alpha+sin5 alpha=4cos((alpha)/(2))cos(3(alpha)/(2))sin3 alpha

If a cos^(3)alpha+3a cos alpha sin^(2)alpha=m and a sin^(2)alpha+3a cos^(2)alpha sin alpha=n then (m+n)^((2)/(3))+(m-n)^((2)/(3))=

If A(alpha)=[(cos alpha, sin alpha),(-sin alpha, cos alpha)] then the matrix A^(2)(alpha) is

sin alpha-sin2 alpha+sin3 alpha=4cos(3 alpha)/(2)cos alpha sin(alpha)/(2)