X^2+2x+8=0, Find x?aaaaaaa
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
Firstly, let find some some other trig functions. We need to know all sides to know other trig functions. We know the horizontal side is -7 because it x-axis is at -7, it y-axis is at 24. so it vertical side is 24. Then we use the pythagorean theorem to find r
49+576=
525=c^2
So since we know that x= -7, y=24, r= 5 times sqr root of 21. We can find some trig functions. We can use function cosine here. Cosine equals
cos=
then we find secant which is the reciprocal of cos so we flip the numbers and that equals