barbie8775
26.09.2020 •
Mathematics
If f(x) = x^2 + 1, find f(a + 1).
1. a^2 + 2 a + 2
2. a^2 + 2
3. a^2+ a + 1
Please answer quickly!
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Ответ:
Cosine is adjacent over hypotenuse.
C is the right angle so AB is the hypotenuse.
A is the angle we're interested in, so AC is the adjacent.
cos A = AC/AB = 12/37
12/37