" 8."root(4)(tan(alpha)/(2))[[0,-tan(alpha)/(2)],[0,]]

If A=,[[0,-tan((alpha)/(2))]tan((alpha)/(2)),0]], then I+A=(I-A)[[cos alpha,-sin alphasin alpha,cos alpha]]

A=[[0,-tan((alpha)/(2))tan((alpha)/(2)),0]]then(I-A)[[cos alpha,-sin alphasin alpha,cos alpha

If 3sin alpha-sin beta ne 0, then the value of |(tan((alpha+beta)/(2)))/(tan((alpha-beta)/(2)))|

(1)/(2)tan((alpha)/(2))+(1)/(4)tan((alpha)/(4))+(1)/(8)tan((alpha)/(8))dots(1)/(2^(n))tan((alpha)/(2^(n)))+cot alpha

If 3sin alpha = sin beta!=0 , then the value of |(tan((alpha + beta)/2))/(tan((alpha-beta)/2))|

Prove that sin 4alpha = 4 tan alpha (1 - tan^(2) alpha)/((1 + tan^(2) alpha)^(2))

prove that :tan(alpha)+2tan(2 alpha)+4(tan4 alpha)+8cot(8 alpha)=cot(alpha)

prove that : tan(alpha)+2 tan(2alpha) +4(tan4alpha)+8cot(8alpha) = cot(alpha)