Question

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

Answer 1

`a = 4 \:`

`b = 2 √(2)`

Explanation:

tan 45° = 1

so,

=》

`1 = (b)/(2 √(2) )`

=》

`b = 2 √(2)`

now,

by pythagorus theorem :-

=》

`a {}^(2) = (2 √(2) ) {}^(2) + (2 √(2) ){}^(2)`

=》

`a {}^(2) = 8 + 8`

=》

`a {}^(2) = 16`

=》

`a = √(16)`

=》

`a = 4`

Answer 2

The answer is A

Explanation: