[" 39.If "P_(0)=cos theta+sin theta" ,then "P_(n)-P_(n2)=kP_(n)" ,where "],[[" (A) "k=1," (B) "k=-sin^(2)theta cos^(2)theta],[" (C) "k=sin^(2)theta," (D) "k=cos^(2)theta]]

If p_(n)=cos^(n)theta+sin^(n)theta then p_(n)-p_(n-2)=kp_(n-4) where k

If P_(n)=cos^(n)theta+sin^(n)theta then 2P_(6)-3P_(4)+1=

If P_n = cos^n theta+ sin^n theta then 2P_6-3P_4 + 1 =

If P_n = cos^n theta+ sin^n theta then 2P_6-3P_4 + 1 =

If P_(n) = cos^(n)theta +sin^(n)theta , then P_(2) - P_(1) is equal to :

If P_(n) = cos^(n)theta +sin^(n)theta , then P_(2) - P_(1) is equal to :

If P_(n) = cos ^(n)theta + sin^(n)theta then 2. P_(6) - 3. P_(4) + 1 =

sin^(2)n theta-sin^(2)(n-1)theta=sin^(2)theta where n is constant and n!=0,1

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 P_(n) = cos^(n) theta + sin^(n) theta 6P_(10) -15P_(8) + 10P_(6) is equal to