Answer:
Step-by-step explanation:
4 sec x=-8
secx=-2
cos x=-1/2=-cos π/3=cos(π-π/3),cos (π+π/3)
=cos (2π/3),cos(4π/3)
x=2π/3,4π/3
Answer:
x = 2π/3, 4π/3
Step-by-step explanation:
4secx = -8
secx = -2
cosx = -½
basic angle = π/3
x = π - π/3, π + π/3
x = 2π/3, 4π/3
