This is the question
2 answers:
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See the picture below
Answer:
cos x ≠ 0 ⇔ x ≠ ; k ∈ N
<=> cos²x + sin²x = 1
⇔ 1 = 1
=> x = { R \ (pi/2 + k.pi); k ∈ N}
Step-by-step explanation:
Answer:
A = 3
B = -5
C = 2
Step-by-step explanation:
The way to format a quadratic equation is: , so the first step to solving this is to format it in the right way, where the
comes first, the
second, and the number alone.
After formatting, your equation should look like this:
From here, you can see the the <em>a </em> is 3, the <em>b</em> is -5, and the <em>c </em>is 2