Question

do this fast pls
now I also write in english .
I m also giving options.
pls give the ans. and tell how the ans. come.​

Answer 1

The correct answer is Option 4 a°

$90 - (90 - a)$

$= 90 - 90 + a$

$= a \degree$

Answer 2

The correct answer is Option 4 a°

$90 - (90 - a)$

$= 90 - 90 + a$

$= a \degree$