Find the sum of n terms of the series `sqrt(1-sin2theta)+(sqrt(1-sin4theta)+sqrt(1-sin6theta)+…`

sqrt((1+sin theta)/(1-sin theta)?)?

Find the sum to n terms of the series sin^3 theta +1/3 sin^3 3theta+1/3^2sin^3 9theta+1/3^3 sin^3 27theta+…

Prove that sin theta sec3 theta=(1)/(2)[tan3 theta-tan theta] and hence find the sum to n terms of the series sin theta sec3 theta+sin3 theta sec3^(2)theta+sin3^(2)theta sec3^(3)theta+...

Evaluate: sqrt((1-sin theta)/(1+sin theta)) .

If theta=60^@ then 1/2 sqrt(1+sin theta)+1/2sqrt(1-sin theta)=

What is sqrt(1+sin2theta) equal to?

If theta lies in the second quadrant. Then the value of sqrt((1-sin theta)/(1+sin theta))+sqrt((1+sin theta)/(1-sin theta)) is equal to :

Sum to n terms the series costheta-sin2theta-cos3theta+sin4theta+cos5theta-……

cos theta - sqrt3 sin theta = 1

If theta lies in the second quadrant, then sqrt((1-sintheta)/(1+sin theta))+sqrt((1+sin theta)/(1-sin theta)) is equal to :