`y=sin^(2)theta+cos ec^(2)theta,theta!=n pi n in z`then

If sin^(3)theta+sin theta cos^(2)theta=1, then theta is equal to (n in Z)( a) 2n pi(b)2n pi+(pi)/(2)(c)2n pi-(pi)/(2) (d) n pi

|2sin theta-csc theta|>=1 and theta!=(n pi)/(2),n in Z|2sin theta-csc theta|>=1 and theta!=(n pi)/(2),n in Z then cos2 theta>=(1)/(2)(b)cos2 theta>=(1)/(4)cos2 theta<=(1)/(2)(d)cos2 theta<=(1)/(4)

Prove that: sin^(2)theta=sin^(2)alpha, then theta=n pi+-alpha,n in Z

Prove that: cos^(2)theta=cos^(2)alpha then theta=n pi+-alpha,n in Z

If P_(n)=cos^(n)theta+sin^(n)theta and Q_(n)=cos^(n)theta-sin^(n)theta then show that p_(n-2)=-sin^(2)theta cos^(2) theta p_(n-4) hence show that p_(4)=1-2 sin^(2) theta cos^(2) theta Q_(4)=cos^(2) theta- sin^(2) theta

If x=2sin theta-sin2 theta and y=2cos theta-cos2 theta , theta in[0,2 pi], then (d^(2)y)/(dx^(2)) at theta=pi is

If (cos theta+cos2 theta)+sin2 theta(1+2cos theta)=2sin theta,theta in[-pi,pi] then