In `DeltaABC,` the value of `c cos (A-theta )+a cos (C+theta)=`

If sin theta_1 + sintheta_2 + sin theta_3=3, then find the value of cos theta_1 + cos theta_2 + cos theta_3.

If tan^(4)theta +tan^(2) theta = 1 , then the value of cos^(4)theta +cos^(2)theta is-

If 3 sin theta + 4 cos theta=5 , then find the value of 4 sin theta-3 cos theta .

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

If cot theta=(4)/(3) , then find the value of sin theta,cos theta and cos ectheta in first quadrant. If sin theta+cos ec theta=2 then find the value of sin^(8 )theta+cos ec^(8)theta .

Find the minimum value of sec^2 theta + cos^2 theta + 2

If alpha and beta are the solution of a cos theta + b sin theta = c , then

The greater value of the function -5 sin theta +12 cos theta is

Consider DeltaACB , right angled at C, in which AB = 29 units, BC = 21 units and angleABC = theta (see the given figure). Determine the values of: ( 1 ) cos^(2)theta + sin^(2)theta, ( 2) cos^(2)theta - sin^(2)theta .

The value of cos (270^(@) + theta) cos ( 90^(@) -theta) -sin (270^(@) - theta) cos theta is