Respuesta :

Answer:

x = 1.2√2

Step-by-step explanation:

Taking the cosine value of the angle :

  • cos 45° = 1.2/x
  • 1/√2 = 1.2/x
  • x = 1.2√2
X=27
Because the rule of a triangle is
1/2 x base x hiegt
1/2 x 1.2 x45 =21