Question

Can someone help me out please?? I would really appreciate it.

Answer 1

Answer:

The answer is A

Step-by-step explanation:

Answer 2

Answer:

$a = 4 \:$

$b = 2 \sqrt{2}$

Step-by-step explanation:

tan 45° = 1

so,

=》

$1 = \frac{b}{2 \sqrt{2} }$

=》

$b = 2 \sqrt{2}$

now,

by pythagorus theorem :-

=》

$a {}^{2} = (2 \sqrt{2} ) {}^{2} + (2 \sqrt{2} ){}^{2}$

=》

$a {}^{2} = 8 + 8$

=》

$a {}^{2} = 16$

=》

$a = \sqrt{16}$

=》

$a = 4$