`int(cosalpha)/(a^2+sin^2alpha)d alpha` is equal to

int(cos alpha)/(a^(2)+sin^(2)alpha)d alpha is equal to

(sqrt(2)-sin alpha-cos alpha)/(sin alpha-cos alpha) is equal to (a)sec((alpha)/(2)-(pi)/(8))(b)cos((pi)/(8)-(alpha)/(2))(c)tan((alpha)/(2)-(pi)/(8))(d)cot((alpha)/(2)-(pi)/(2))

(sqrt(2)-sin alpha-cos alpha)/(sin alpha-cos alpha) is equal to

If (2 sin alpha)/(1 + cos alpha + sin alpha) = 3/4 , then the value of (1 + cos alpha + sinalpha)/(1 + sin alpha) is equal to

If alpha=(pi)/(17), then the value of (sin21 alpha-sin alpha)/(sin16 alpha+sin4 alpha) is equal to

If (3 pi)/(4)

If 0