सिद्ध कीजिए की `cos 4 theta - sin 2 theta = 2 sin (pi/4 + theta) sin (pi/4 - 3 theta)`

4 sin ((pi)/(3) + theta)sin ((pi)/(3)- theta)=

Prove that 4 sin theta sin(pi/3 + theta) sin (pi/3-theta) = sin 3 theta

4sin(pi/3+theta)sin(pi/3-theta)=

sin theta+sin((2 pi)/(3)+theta)+sin((4 pi)/(3)+theta)=0

Prove that ( cos theta + cos 2 theta + cos 3 theta + cos 4 theta)/(sin theta + sin 2 theta + sin 3 theta + sin 4 theta)= cot ""(5theta)/(2).

Show that 4 sin ((pi)/(3) - theta ) sin ((pi)/(3) + theta) =3-4 sin ^(2) theta

If theta in ((pi)/(2), (3pi)/(2)), then the value of sqrt(4 cos ^(4) theta + sin ^(2) 2 theta) + 4 cot theta cos ^(2) ((pi)/(4) -(theta)/(2)) is .............. A) -2 cot theta B) 2 cot theta C) 2 cos theta D) 2 sin theta

sin3 theta=4sin theta sin2 theta sin4 theta in0<=theta<=pi has

Prove that 4sin theta sin((pi)/(3)+theta)sin((2 pi)/(3)+theta)=sin3 theta

If theta in ((pi)/(2), (3pi)/(2)), then the value of sqrt(4 cos ^(4) theta + sin ^(2) 2 theta) + 4 cot theta cos ^(2) ((pi)/(4) +(theta)/(2)) is