My question is from Matrices grade 12 Q Let A = 0-tanα2tanα20 I + A = (I - Maths - Matrices

Question

My question is from Matrices grade 12

Q Let A = 0 - tan α 2 tan α 2 0   I   +
  A   =   ( I   –   A )  
cosα - sin   α sinα cos   α

Neha Sethi · Accepted Answer

Dear student
Your question is not clear and appears to be
incomplete Assuming that we have to prove:
I+A=I-Acosα-sinαsinαcosα
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5ac3b3a9c83d4%20png">
⇒I-Acosα-sinαsinαcosα=1-tanα2tanα21=I+A
Regards

My question is from Matrices grade 12 Q. Let A = 0 - tan α 2 tan α 2 0 I + A = ( I – A ) cosα - sin α sinα cos α

My question is from Matrices grade 12

Q. Let A = $[\begin{matrix} 0 & - \tan \frac{α}{2} \\ \tan \frac{α}{2} & 0 \end{matrix}] I + A = (I - A) [\begin{matrix} cosα & - \sin α \\ sinα & \cos α \end{matrix}]$