Find the value of `sin theta+sin(theta+120^@)+sin(theta+240^@)`

Find the value of 1-2sin^(2)theta+sin^(4)theta .

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

If x=(2 sin theta)/(1+ sin theta + cos theta) then the value of (1+ sin theta - cos theta)/(1+ sin theta)

lf 5 cos theta=7 sin theta , find the value of ( sin theta + cos theta)/(2 sin theta -3 cos theta) .

Find the value of (sin theta)/(cos (90^@+theta))+(sin theta)/(sin (180^@+theta))+(tan(90^@+theta))/(cot theta)

If cot theta = (3)/(4) find the value of : ( sin theta- cos theta)/(sin theta+cos theta)

If tan theta=(a)/(b) then find the value of (cos theta+sin theta)/(cos theta-sin theta)

If cot theta = (3)/(4) find the value of : ( sin theta- cos theta)/(sin theta+cos theta)

If tan theta=(4)/(5), find the value of (cos theta-sin theta)/(cos theta+sin theta)