Let `A=[0-tan(alpha//2)tan(alpha//2)0]` and `I` be the identity matrix of order 2. Show that `I+A=(I-A)[cosalpha-sinalphasinalphacosalpha]` .

Let A,=[[0,-tan((alpha)/(2))tan((alpha)/(2)),0]] and I be the identity matrix of order 2. show that I+A=(I-A)[cos alpha-sin alpha sin alpha cos alpha]

If A = [(0,-tan(alpha//2)),(tan(alpha//2),0)] and I is a 2xx2 unit matrix, prove that I+A=(I-A)[(cosalpha,-sinalpha),(sinalpha,cosalpha)]

Prove that (1-cosalpha)/sinalpha=tan(alpha/2)

If A=[[0,-tan alpha2,tan alpha2,tan alpha]] and I is 2xx2 unit matrix,then (I-A)[[cos alpha,sin alphasin alpha,sin alphasin alpha,sin alpha]] is (a) these

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