Question

Find x in this 45°-45°-90° triangle.

x =

Answer 1

X=27
Because the rule of a triangle is
1/2 x base x hiegt
1/2 x 1.2 x45 =21

Answer 2

x = 1.2√2

Explanation:

Taking the cosine value of the angle :

• cos 45° = 1.2/x
• 1/√2 = 1.2/x
• x = 1.2√2