Why is cos(180°) negative?

me explain in words: )

Cos 0 and cos 180 are both = 1 and -1, respectively. The cosine of an angle is the ratio of the two sides of a triangle “adjacent/hypotenuse”. Whether the angle is 0 or 180, the adjacent side and the hypotenuse coincide and so both are of the same length so the ratio of adjacent to hypotenuse will be 1.0.

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°

-1/3(x+1)^5

i’m pretty sure this is correct