If `8theta = pi` show that `cot 7theta+cot theta = 0`

If theta=(pi)/(7), show that cos theta cos 2theta cos 3 theta = (1)/(8) .

Solve tan 5 theta= cot 2 theta .

(b) cosec theta=1+cot theta

(b) cosec theta=1+cot theta

Solve: cot5theta=cot2theta

If "cot" theta "cot" 7 theta + "cot" theta "cot" 4 theta + "cot" 4 theta "cot" 7 theta = 1, " then" theta =

If pi lt theta lt 2pi then sqrt ((1+cos theta)/(1-cos theta))= a. cosec theta+cot theta , b. cosec theta - cot theta , c. cot theta-cosec theta , d. -cosectheta - cot theta

prove that (cosec theta + cot theta)/(cosec theta- cot theta) = (cosec theta +cot theta)^2

If y sinphi = x sin (2theta + phi) show that (x + y) cot (theta + phi) = (y-x) cot theta .

tan theta + 2 tan 2 theta + 4 tan 4 theta + 8 cot 8 theta = cot theta.