It is already in identity.
cos (x - y) - cos (x + y) = 2 sin(x) sin (y)
Answer: 80
Step-by-step explanation:
To convert from rectangular coordinates (x,y) to polar coordinates (r, θ), the following equations should be used:
r = sqrt( x^2 + y^2)
<span>θ = tan^-1 (y/x)
</span>
Substituting (-3,3) accordingly to the equations, we obtain r equal to 3*sqrt(2) and θ equal to -π/4. Thus, the polar coordinates equivalent to (-3,3) is (3*sqrt(2), -π/4).
Answer: 93
Step-by-step explanation:
I am not sure about the question but,I think this is the answer. The maximum people that she could safely take in her car to the fun run is 4.
