Cosine of an angle is the adjacent leg divided by the hypotenuse.
So cos(60) = a / 12
I'm going to assume it's your last option because it's not in the picture.
Answer:
a=8
Step-by-step explanation:
-5(a+3)=-55
First you times the bracket by -5
-5a-15=-55
Then you add the 15 to -55 because since the 15 is a negative on the right it has to be the opposite to the left
-5a=-40
Then you divide both sides by negative 5
-5a . = . -40
--------- ----------
- 5 -5
a= 8
Answer:
ok person! thx for the points!
Step-by-step explanation:
- 16:10
- 24:15
- 40:25
8:5 is just a simplier version of these other ratios
