[" ROTE: - "],[" 0"cot theta+cot(60+theta)-cot(60-theta)=3cot3 theta]

cot(45+theta)cot(45-theta)=

cot(45^@+theta)cot(45^@-theta)=

Prove that: cot theta+cot(60^(@)+theta)+cot(120^(@)+theta)=3cot3 theta

(1)/(cosec theta+cot theta)=cosec theta-cot theta

Show that cottheta+cot(240^(@)+theta)+cot(300^(@)+theta)=3 cot3theta

Prove that: a) cotthetacot(60^(@)-theta)cot(60^(@)+theta)=cot3theta b) cos5theta=16cos^(5)theta-2thetacos^(3)theta+5costheta c) sin4theta=4sinthetacos^(3)theta-4costhetasin^(3)theta

Prove that: a) cotthetacot(60^(@)-theta)cot(60^(@)+theta)=cot3theta b) cos5theta=16cos^(5)theta-2thetacos^(3)theta+5costheta c) sin4theta=4sinthetacos^(3)theta-4costhetasin^(3)theta

Prove that cot theta + cot (60^(@) theta) + cot (120^(@) + theta) = 3 cot 3 theta .

Solve: cot5theta=cot2theta

Solve: cot5theta=cot2theta