If `sin theta=(1)/(2)` then `cosec^{2} \theta` equals to-
1. `(1)/(4)`
2. `2`
3. `1`
4. `4`

If sin^2 theta=1/4 , then the value of theta is

If sintheta+sin^(2)theta = 1 then cos^(2)theta+cos^(4)theta is equal to :

If sintheta+cosec theta=2 , then sin^(2)theta+cosec ^(2)theta is equal to

If sintheta+cosectheta=2 , then "sin"^(2)theta+"cosec"^(2)theta is equal to

If sintheta+sin^2theta=1 , then cos^2theta+cos^4theta =? (a)-1 (b)0 (c)1 (d)2

(1)/( sec 2 theta) = cos ^(4) theta - sin ^(4) theta.

(1+tan theta+sec theta)(1+cot theta-cosec theta) = ? (a) -1 (b) 0 (c) 2

If sintheta+sin^2theta=1 , prove that cos^2theta+cos^4theta=1

If 4n theta = pi , then sin^2 theta+ sin^2 3theta + sin^2 5theta +.... 2n terms is equal to:(1) n , (2) 2n . (3) 3n (4) n^2

If |2 sin theta-cosec theta| ge 1 and theta ne (n pi)/2, n in Z , then