Please help me 20 points
2 answers:
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Answer:
6.13
Step-by-step explanation:
Using Sine Law we know that
Using your figure let's assign sides and angles:
A=? B = 60° C = 70°
a = 5 b = ? c = x
If we put that into our formula:
Notice that we have too many unknowns. We need to complete at least one ratio to do this, so how do we do this?
Notice we have 2 angles given, so we solve for the third angle. The sum of all angles in any triangle is always 180°
∠A + ∠B + ∠C= 180°
∠A + 60° + 70° = 180°
∠A + 130° = 180°
∠A = 180° - 130°
∠A = 50°
Now we can use this to solve for x.
So the closest answer would be 6.13
If f(-x) = f(x) then the function is even.
If f(-x) = -f(x) then the function is odd.
We have:
calculate f(-x):
f(-x) = f(x), therefore your answer: The function f(x) is even.
If we have:
f(-x) = f(x)
f(x) is even