Answer: B) 2
Explanation:
Using SOH CAH TOA
CAH
Cos ∝ = Adjacent/Hypothenus
∝ = 45°, Adjacent = √2, Hypothenus = u
⇒ Cos 45° = √2/u
But Cos 45° = 1/√2 in surd form
i.e 1/√2 = √2/u
u = √2 x √2
u = √4
u = 2•I’ve completed answering the question.
