Find out the correct answer out of the options given against each question:If `E(T_1) = theta_1 + 2theta_2`,`E(T_2) = theta_1 + theta_2`,then unbiased estimator of `theta_1` is-

Find out the correct answer out of the options given against each questions : (E-k)^2 is minimum when

Choose the correct alternative : [MCQ] If E(T_1) = theta_1 + theta_2 and E(T_2) = theta_1 - theta_2 , then the unbiased estimator of theta_2 is--

Answer the following questions : (Alternatives are to be noted): If T_1 , T_2 , T_3 be estimators with expectations E(T_1) = theta_1+ 2theta_2 , E(T_2) = theta_2+2theta_3 , and E(T_3) = theta_3 + 2theta_1 find unbaised estimator of theta_1+theta_2+theta_3 .

If tan^(2)theta + cos2theta=1 , then the general solution of theta is-

If (cos theta)/(1-sin theta)-(costheta)/(1+sin theta)=2 , then find the value of theta .

(1 + tan^(2) theta)/(1 - tan^(2) theta)=

sin2theta - cos2theta =1

If sin theta = -1/2 , then theta =

If cos^2 theta - sin^2 theta =1/2 , then find value of tan^2 theta .

If tan 2theta . Tan 3 theta =1 , then sin5theta =