Answer:
s = 3.381cm
Step-by-step explanation:
We know all the angles because a triangle's angles add up to 180°.
So, we have 90, 65, and 25° angles in this triangle.
To find, s, of this triangle, we need to use Sin because Sin uses the angle opposite of the side, which is 25°.
I am assuming you know your trigonometry, but I attached an image that will help too.
So, we have Sin(25) = opposite/hypotenuse.
We have the length of the hypotenuse, 8cm. So plug it in.
And solve for opposite, which is the side, s.
Sin(25) * 8 = opposite.
3.381cm = s.
Hope this helps
