" 和成行 (Prove that) "cot theta+cot(60^(@)+theta)+cot(120^(@)+theta)=3cot3 theta

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

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

Prove that, cot theta - tan theta = 2cot 2 theta

Prove that cot theta-tan theta=2cot 2 theta .

Prove that cot theta-tan theta=2cot 2 theta .

Prove that cot theta-tan theta=2cot 2 theta .

Prove that : cot theta-tan theta=2cot2 theta

The base of a triangle is divided into three equal parts. If theta_(1), theta_(2), theta_(3) be thw angles subtended by these parts at the vertex, then prove that (cot theta_(1) +cot theta_(2) ) (cot theta_(2)+ cot theta_(3))=4 cosec ^(2) theta _(2)

The base of a triangle is divided into three equal parts. If theta_(1), theta_(2), theta_(3) be the angles subtended by these parts at the vertex, then prove that (cot theta_(1) +cot theta_(2) ) (cot theta_(2)+ cot theta_(3))=4 cosec ^(2) theta _(2)

The base of a triangle is divided into three equal parts. If theta_(1), theta_(2), theta_(3) be thw angles subtended by these parts at the vertex, then prove that (cot theta_(1) +cot theta_(2) ) (cot theta_(2)+ cot theta_(3))=4 cosec ^(2) theta _(2)