Answer:

Given:
- adjacent: 4 cm
- hypotenuse: x cm
- angle: 45°
<u>using cosine rule:</u>




The answer is 17/22 17/20 because of the fractions
Answer:
1:3
Step-by-step explanation:
There are 3 adults per 1 child at the book fair. I think this is right but im not 100% sure :)
Answer:
<h2>The triangle is not right triangle</h2>
Step-by-step explanation:
The steps in the above photo
I hope that is useful for you :)