सिद्ध कीजिए कि
`cotA-tanA=2cot2A`.

TanA+cotA=

Prove that cotA-tanA=2cot2A

Prove that cotA-tanA=2cotA

सिद्ध कीजिए कि |vecA xx vecB|^(2) + |vecA * vecB|^(2) = (AB)^(2).

सिद्ध कीजिए कि 2tan^(-1)sqrt((b)/(a))=cos^(-1)((a-b)/(a+b))

यदि triangleABC में (If इन triangleABC), a = (1)/(sqrt(6)-sqrt(2)), b = (1)/(sqrt(6)+sqrt(2)), C = 60^(@) तो सिद्ध कीजिए कि (Prove that) c = (sqrt(4))/(2) .

Prove that cotA-tanA=2cot2A and deduce that tan alpha+2tan2alpha+4tan4alpha+8cot8alpha=cot alpha

Prove that : cotA-tanA=(2cos^2A-1)/(sinAcosA)

using cotA-tanA=2cot2A deduce that tanalpha+tan2 alpha+4tan4alpha+8cot8alpha=cotalpha

Prove that cotA-cosec2A=cot2A