" (ii) "(cos theta+i sin theta)(cos3 theta+i sin3 theta)...{cos(2r-1)theta+i sin(2r-1)theta}=1

" (i) "(cos theta+sin theta)/(cos theta-sin theta)

"(cos theta+i sin theta)^(6)(cos theta-i sin theta)^(-3)

(cos theta + i sin theta)^3 xx (cos theta-i sin theta)^4=

The general value of theta which satisfies the equation (cos theta + i sin theta) (cos 3 theta + I sin 3 theta) ….. {cos(2n - 1) theta + I sin (2n - 1) theta} = 1 is

Find the general value of theta which satisfies the equation (cos theta+i sin theta)(cos2 theta+i sin2 theta)......(cos n theta+i sin n theta)=1

(1+cos theta+i sin theta)^(10)+(1+cos theta-i sin theta)^(10)=

(i) |(cos theta,-sin theta),(sin theta,cos theta)|

The number of values of theta in (0, pi] , such that (cos theta + i sin theta) (cos 3 theta + i sin 3 theta) (cos 5 theta + i sin 5 theta) (cos 7 theta + i sin 7 theta) (cos 9 theta + i sin 9 theta) = -1 is

If (cos theta + i sin theta)(cos 2 theta +i sin 2 theta ) …(cos n theta + i sin n theta)=1 then the value of theta is (m are integers)-