Answer:
θ = 2π/3 or 5π/3
Step-by-step explanation:
2 cosθ + 1= 0
when + 1 goes to R H S Side than it becomes negative by transposition method
2 cos = -1
now by dividing by 2 both sides we get
cosθ = -
since cosθ is negative
Cosθ = - cos 60°
it means either cosθ lies in 2nd or third quadrant
θ = π - π/3
or
θ = 2π- π/3
so θ = 2π/3 or 5π/3
Hello there, and thank you for posting your question here on brainly.
The smallest number out of the bunch is 40.
Hope this helps!
I think b sorry if it’s wrong :(
Answer:
36%
Step-by-step explanation:
1 = 100%
so 1.36 is increasing by 36%
155 = 2x -15
170 = 2x
85 = x
She had 85 when she first started.