Triangles ABC and DEF are right triangles, as shown. A ABC is similar to A DEF D
B
А
F
E
Which ratios are equal to cos(B)?Choose the TWO ratios that apply.

a/c and d/e are equal to cos(b)

Step-by-step explanation:

i used substitute and solve at first, but that didnt work too well so i moved on to the guess and check method.

my guess is a/c and d/e are equal to cos(b), can anyone check this?

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.