Answer:
this is how u solve this
Step-by-step explanation:
27-3 = 24
24/4 = 6 chairs
Each family brought 6 chairs each.
Am not really sure but I hope it helps
Answer:
Step-by-step explanation:
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Answer:
0°
360°
Step-by-step explanation:
We want to solve the equation,

We expand using trigonometric identities to get;


Simplify;

Simplify;

Add

Divide by 2

Take cosine inverse;
In the

Also in the 3rd quadrant cosine ratio is positive.
