The question is not well formatted. A ell formatted version of the question type is attached and solved below :
10
Step-by-step explanation:
Using trigonometry :
Taking the angle 45Β°
From trigonometry :
Sin ΞΈ = opposite / hypotenus
Opposite = s ; hypotenus = 10β2
Sin 45 = s / 10β2
Recall :
Sin 45 = 1/β2
We have ;
1/β2 = s / 10β2
s = 10β2 * 1/β2
s = 10β2 / β2
s = 10