Question

What is the approximate length of the base of an isosceles triangle if the congruent sides are 2.5 m and the vertex angle is 25°?

Answer 1

okay so what do i do

Answer 2

use trigonometry to find x

I think you need the cosine ratio

Answer 3

i dont know what to do ?

Answer 4

1.08 m
2.62 m
3.37 m
impossible to tell

Answer 5

when you find the value of x, just double it as the perpendicular from the angle to the base bisects the base

Answer 6

so its 2.62

Answer 7

x = 77.5°
the base is equal to 2* 2.5 cos(77.5°)

Answer 8

4
4√2
8
8√2 these are my options