If triangle of `f(theta)=cos^3theta-6 cos^2theta+11costheta-6` is `[m,M]` then the value of `|m+M|` equals

If cot theta+costheta=m and cot theta-costheta=n , then find the value of m^(2)-n^(2) .

For m,n in N, let A(n)=16(cos^(n)theta-sin^(n)theta); and B(m)=16(cos^(m)theta+sin^(m)theta) If A(6)=a cos2 theta+b cos6 theta, then the value of (a+b) is equal to

If sin theta + costheta = m and sin theta - cos theta = n , then

If sin theta + costheta = m and sin theta - cos theta = n , then

If cos (theta +phi)=m cos(theta-phi) ,then the value of (1-m)/(1+m)cot phi .

If costheta + sec theta =2 , then the value of cos^6theta + sec^6 theta is

If (costheta+cos2theta)^3=cos^3theta+cos^3 2theta, then the least positive value of theta is equal to pi/6 (b) pi/4 (c) pi/3 (d) pi/2

If (costheta+cos2theta)^3=cos^3theta+cos^3 2theta, then the least positive value of theta is equal to pi/6 (b) pi/4 (c) pi/3 (d) pi/2

If cos m theta = sin n theta , then theta =