Answer:
glizzy
Step-by-step explanation:
a)
Cos60=1/2=0.5
b)
cos60=4/x
0.5=4/x
0.5x=4
0.5x/0.5=4/0.5
x=8
20/5 = x /4 x = 80/5 = 16
x - 10 / 39 = 5/15 = 1/3
3x - 30 = 39
3x = 69
x = 23
(2x + 10 ) * 4 = 10 *(x + 3)
8x + 40 = 10x + 30
2x = 10
x = 4.
AE = 2(5) + 10 = 20, hope this helped.
