The answer is b plz mark me brainliest
It would hafta be answer choice D
Answer:
(600 miles) / (3 hours) = 200 miles/hour
= 321.8 km/h
Using cos addition formula:
use x for theta
cos(x+π/6)=cosx*cos(π/6)-sinx*sin(π/6)
sinx=1/4
cosx=√15/4
cos(π/6)=√3/2
sin(π/6)=1/2
cos(x+π/6)=(√15/4*√3/2)-(1/4*1/2)
cos(x+π/6)=(√45/8)-(1/8 )
cos(x+π/6)=(√45-1)/8)
Filling in 20 characters just to answer with a pic
